diff --git a/rest-api/db/migrations/20240719071602_main_tables.sql b/rest-api/db/migrations/20240719071602_main_tables.sql
index 8d7de5c..2c023ab 100644
--- a/rest-api/db/migrations/20240719071602_main_tables.sql
+++ b/rest-api/db/migrations/20240719071602_main_tables.sql
@@ -53,8 +53,10 @@ CREATE TABLE internal.media (
 
 CREATE TABLE internal.settings (
   website_id UUID PRIMARY KEY REFERENCES internal.website (id) ON DELETE CASCADE,
-  accent_color_light_theme CHAR(7) CHECK (accent_color_light_theme ~ '^#[a-fA-F0-9]{6}$') NOT NULL DEFAULT '#a5d8ff',
-  accent_color_dark_theme CHAR(7) CHECK (accent_color_dark_theme ~ '^#[a-fA-F0-9]{6}$') NOT NULL DEFAULT '#114678',
+  accent_color_dark_theme CHAR(7) CHECK (accent_color_light_theme ~ '^#[a-fA-F0-9]{6}$') NOT NULL DEFAULT '#a5d8ff',
+  accent_color_light_theme CHAR(7) CHECK (accent_color_dark_theme ~ '^#[a-fA-F0-9]{6}$') NOT NULL DEFAULT '#114678',
+  background_color_dark_theme CHAR(7) CHECK (accent_color_light_theme ~ '^#[a-fA-F0-9]{6}$') NOT NULL DEFAULT '#262626',
+  background_color_light_theme CHAR(7) CHECK (accent_color_dark_theme ~ '^#[a-fA-F0-9]{6}$') NOT NULL DEFAULT '#ffffff',
   favicon_image UUID REFERENCES internal.media (id) ON DELETE SET NULL,
   last_modified_at TIMESTAMPTZ NOT NULL DEFAULT CLOCK_TIMESTAMP(),
   last_modified_by UUID REFERENCES internal.user (id) ON DELETE SET NULL
diff --git a/rest-api/db/migrations/20240720132802_exposed_views_functions.sql b/rest-api/db/migrations/20240720132802_exposed_views_functions.sql
index 89c0f3e..0e7e4aa 100644
--- a/rest-api/db/migrations/20240720132802_exposed_views_functions.sql
+++ b/rest-api/db/migrations/20240720132802_exposed_views_functions.sql
@@ -131,7 +131,7 @@ GRANT SELECT, UPDATE (title, is_published), DELETE ON internal.website TO authen
 
 GRANT SELECT, UPDATE, DELETE ON api.website TO authenticated_user;
 
-GRANT SELECT, UPDATE (accent_color_light_theme, accent_color_dark_theme, favicon_image) ON internal.settings TO authenticated_user;
+GRANT SELECT, UPDATE (accent_color_dark_theme, accent_color_light_theme, background_color_dark_theme, background_color_light_theme, favicon_image) ON internal.settings TO authenticated_user;
 
 GRANT SELECT, UPDATE ON api.settings TO authenticated_user;
 
diff --git a/web-app/src/lib/components/MarkdownEditor.svelte b/web-app/src/lib/components/MarkdownEditor.svelte
new file mode 100644
index 0000000..cbe47c6
--- /dev/null
+++ b/web-app/src/lib/components/MarkdownEditor.svelte
@@ -0,0 +1,72 @@
+<script lang="ts">
+  import { deserialize, applyAction } from "$app/forms";
+  import { textareaScrollTop, previewContent } from "$lib/runes.svelte";
+
+  const {
+    apiPrefix,
+    label,
+    name,
+    content
+  }: { apiPrefix: string; label: string; name: string; content: string } = $props();
+
+  let mainContentTextarea: HTMLTextAreaElement;
+
+  const updateScrollPercentage = () => {
+    const { scrollTop, scrollHeight, clientHeight } = mainContentTextarea;
+    textareaScrollTop.value = (scrollTop / (scrollHeight - clientHeight)) * 100;
+  };
+
+  const handleImagePaste = async (event: ClipboardEvent) => {
+    const clipboardItems = Array.from(event.clipboardData?.items ?? []);
+    const file = clipboardItems.find((item) => item.type.startsWith("image/"));
+
+    if (!file) return null;
+
+    event.preventDefault();
+
+    const fileObject = file.getAsFile();
+
+    if (!fileObject) return;
+
+    const formData = new FormData();
+    formData.append("file", fileObject);
+
+    const request = await fetch("?/pasteImage", {
+      method: "POST",
+      body: formData
+    });
+
+    const result = deserialize(await request.clone().text());
+    applyAction(result);
+
+    const response = await request.json();
+
+    if (JSON.parse(response.data)[1]) {
+      const fileId = JSON.parse(response.data)[4];
+      const fileUrl = `${apiPrefix}/rpc/retrieve_file?id=${fileId}`;
+
+      const target = event.target as HTMLTextAreaElement;
+      const newContent =
+        target.value.slice(0, target.selectionStart) +
+        `![](${fileUrl})` +
+        target.value.slice(target.selectionStart);
+
+      previewContent.value = newContent;
+    } else {
+      return;
+    }
+  };
+</script>
+
+<label>
+  {label}:
+  <textarea
+    {name}
+    rows="20"
+    bind:value={previewContent.value}
+    bind:this={mainContentTextarea}
+    onscroll={updateScrollPercentage}
+    onpaste={handleImagePaste}
+    required>{content}</textarea
+  >
+</label>
diff --git a/web-app/src/lib/components/WebsiteEditor.svelte b/web-app/src/lib/components/WebsiteEditor.svelte
index 0038b73..639cb06 100644
--- a/web-app/src/lib/components/WebsiteEditor.svelte
+++ b/web-app/src/lib/components/WebsiteEditor.svelte
@@ -2,30 +2,27 @@
   import type { Snippet } from "svelte";
   import { md } from "$lib/utils";
   import { page } from "$app/stores";
+  import { previewContent, textareaScrollTop } from "$lib/runes.svelte";
 
   const {
     id,
     contentType,
     title,
     children,
-    fullPreview = false,
-    previewContent,
-    previewScrollTop = 0
+    fullPreview = false
   }: {
     id: string;
     contentType: string;
     title: string;
     children: Snippet;
     fullPreview?: boolean;
-    previewContent: string;
-    previewScrollTop?: number;
   } = $props();
 
   let previewElement: HTMLDivElement;
 
   $effect(() => {
     const scrollHeight = previewElement.scrollHeight - previewElement.clientHeight;
-    previewElement.scrollTop = (previewScrollTop / 100) * scrollHeight;
+    previewElement.scrollTop = (textareaScrollTop.value / 100) * scrollHeight;
   });
 </script>
 
@@ -66,9 +63,9 @@
 
 <div class="preview" bind:this={previewElement}>
   {#if fullPreview}
-    <iframe src={previewContent} title="Preview"></iframe>
+    <iframe src={previewContent.value} title="Preview"></iframe>
   {:else}
-    {@html md(previewContent, Object.keys($page.params).length > 1 ? true : false)}
+    {@html md(previewContent.value, Object.keys($page.params).length > 1 ? true : false)}
   {/if}
 </div>
 
diff --git a/web-app/src/lib/db-schema.ts b/web-app/src/lib/db-schema.ts
index 1706d8e..a02fb53 100644
--- a/web-app/src/lib/db-schema.ts
+++ b/web-app/src/lib/db-schema.ts
@@ -387,16 +387,20 @@ const media = {
 // Table settings
 export interface Settings {
   website_id: string;
-  accent_color_light_theme: string;
   accent_color_dark_theme: string;
+  accent_color_light_theme: string;
+  background_color_dark_theme: string;
+  background_color_light_theme: string;
   favicon_image: string | null;
   last_modified_at: Date;
   last_modified_by: string | null;
 }
 export interface SettingsInput {
   website_id: string;
-  accent_color_light_theme?: string;
   accent_color_dark_theme?: string;
+  accent_color_light_theme?: string;
+  background_color_dark_theme?: string;
+  background_color_light_theme?: string;
   favicon_image?: string | null;
   last_modified_at?: Date;
   last_modified_by?: string | null;
@@ -405,8 +409,10 @@ const settings = {
   tableName: "settings",
   columns: [
     "website_id",
-    "accent_color_light_theme",
     "accent_color_dark_theme",
+    "accent_color_light_theme",
+    "background_color_dark_theme",
+    "background_color_light_theme",
     "favicon_image",
     "last_modified_at",
     "last_modified_by"
diff --git a/web-app/src/lib/runes.svelte.ts b/web-app/src/lib/runes.svelte.ts
new file mode 100644
index 0000000..fab051e
--- /dev/null
+++ b/web-app/src/lib/runes.svelte.ts
@@ -0,0 +1,30 @@
+let sendingState = $state(false);
+let previewContentState = $state("");
+let textareaScrollTopState = $state(0);
+
+export const sending = {
+  get value() {
+    return sendingState;
+  },
+  set value(val) {
+    sendingState = val;
+  }
+};
+
+export const previewContent = {
+  get value() {
+    return previewContentState;
+  },
+  set value(val) {
+    previewContentState = val;
+  }
+};
+
+export const textareaScrollTop = {
+  get value() {
+    return textareaScrollTopState;
+  },
+  set value(val) {
+    textareaScrollTopState = val;
+  }
+};
diff --git a/web-app/src/lib/templates/common/Footer.svelte b/web-app/src/lib/templates/common/Footer.svelte
index da65909..d18594d 100644
--- a/web-app/src/lib/templates/common/Footer.svelte
+++ b/web-app/src/lib/templates/common/Footer.svelte
@@ -1,5 +1,5 @@
 <script lang="ts">
-  import type { WebsiteOverview } from "../../utils";
+  import { type WebsiteOverview, md } from "../../utils";
 
   const {
     websiteOverview,
@@ -10,7 +10,7 @@
 <footer>
   <div class="container">
     <small>
-      {@html websiteOverview.footer.additional_text.replace(
+      {@html md(websiteOverview.footer.additional_text, false).replace(
         "!!legal",
         `<a href="${isIndexPage ? "./legal-information" : "../legal-information"}">Legal information</a>`
       )}
diff --git a/web-app/src/lib/utils.ts b/web-app/src/lib/utils.ts
index 0af6b4c..9a03ad3 100644
--- a/web-app/src/lib/utils.ts
+++ b/web-app/src/lib/utils.ts
@@ -15,6 +15,8 @@ import type {
   LegalInformation,
   DomainPrefix
 } from "$lib/db-schema";
+import type { SubmitFunction } from "@sveltejs/kit";
+import { sending } from "./runes.svelte";
 
 export const ALLOWED_MIME_TYPES = [
   "image/jpeg",
@@ -151,45 +153,59 @@ export const md = (markdownContent: string, showToc = true) => {
   return html;
 };
 
-export const handleImagePaste = async (event: ClipboardEvent, API_BASE_PREFIX: string) => {
-  const clipboardItems = Array.from(event.clipboardData?.items ?? []);
-  const file = clipboardItems.find((item) => item.type.startsWith("image/"));
+export const LOADING_DELAY = 500;
+let loadingDelay: number;
 
-  if (!file) return null;
+export const enhanceForm = (options?: {
+  reset?: boolean;
+  closeModal?: boolean;
+}): SubmitFunction => {
+  return () => {
+    loadingDelay = window.setTimeout(() => (sending.value = true), LOADING_DELAY);
 
-  event.preventDefault();
+    return async ({ update }) => {
+      await update({ reset: options?.reset ?? true });
+      window.clearTimeout(loadingDelay);
+      if (options?.closeModal) {
+        window.location.hash = "!";
+      }
+      sending.value = false;
+    };
+  };
+};
 
-  const fileObject = file.getAsFile();
+export const hexToHSL = (hex: string) => {
+  const r = parseInt(hex.slice(1, 3), 16) / 255;
+  const g = parseInt(hex.slice(3, 5), 16) / 255;
+  const b = parseInt(hex.slice(5, 7), 16) / 255;
 
-  if (!fileObject) return;
+  const max = Math.max(r, g, b);
+  const min = Math.min(r, g, b);
+  const d = max - min;
 
-  const formData = new FormData();
-  formData.append("file", fileObject);
+  let h = 0;
+  const l = (max + min) / 2;
+  const s = d === 0 ? 0 : d / (1 - Math.abs(2 * l - 1));
 
-  const request = await fetch("?/pasteImage", {
-    method: "POST",
-    body: formData
-  });
-
-  const result = deserialize(await request.clone().text());
-  applyAction(result);
-
-  const response = await request.json();
-
-  if (JSON.parse(response.data)[1]) {
-    const fileId = JSON.parse(response.data)[4];
-    const fileUrl = `${API_BASE_PREFIX}/rpc/retrieve_file?id=${fileId}`;
-
-    const target = event.target as HTMLTextAreaElement;
-    const newContent =
-      target.value.slice(0, target.selectionStart) +
-      `![](${fileUrl})` +
-      target.value.slice(target.selectionStart);
-
-    return newContent;
-  } else {
-    return "";
+  if (d !== 0) {
+    switch (max) {
+      case r:
+        h = ((g - b) / d + (g < b ? 6 : 0)) / 6;
+        break;
+      case g:
+        h = ((b - r) / d + 2) / 6;
+        break;
+      case b:
+        h = ((r - g) / d + 4) / 6;
+        break;
+    }
   }
+
+  return {
+    h: Math.round(h * 360),
+    s: Math.round(s * 100),
+    l: Math.round(l * 100)
+  };
 };
 
 export interface WebsiteOverview extends Website {
diff --git a/web-app/src/routes/(anonymous)/login/+page.svelte b/web-app/src/routes/(anonymous)/login/+page.svelte
index f14398f..bb9d470 100644
--- a/web-app/src/routes/(anonymous)/login/+page.svelte
+++ b/web-app/src/routes/(anonymous)/login/+page.svelte
@@ -3,30 +3,19 @@
   import SuccessOrError from "$lib/components/SuccessOrError.svelte";
   import type { ActionData } from "./$types";
   import LoadingSpinner from "$lib/components/LoadingSpinner.svelte";
+  import { sending } from "$lib/runes.svelte";
+  import { enhanceForm } from "$lib/utils";
 
   const { form }: { form: ActionData } = $props();
-
-  let sending = $state(false);
-  let loadingDelay: number;
 </script>
 
 <SuccessOrError success={form?.success} message={form?.message} />
 
-{#if sending}
+{#if sending.value}
   <LoadingSpinner />
 {/if}
 
-<form
-  method="POST"
-  use:enhance={() => {
-    loadingDelay = window.setTimeout(() => (sending = true), 500);
-    return async ({ update }) => {
-      await update();
-      window.clearTimeout(loadingDelay);
-      sending = false;
-    };
-  }}
->
+<form method="POST" use:enhance={enhanceForm()}>
   <label>
     Username:
     <input type="text" name="username" required />
diff --git a/web-app/src/routes/(anonymous)/register/+page.svelte b/web-app/src/routes/(anonymous)/register/+page.svelte
index 671f1be..be38cb9 100644
--- a/web-app/src/routes/(anonymous)/register/+page.svelte
+++ b/web-app/src/routes/(anonymous)/register/+page.svelte
@@ -3,16 +3,15 @@
   import SuccessOrError from "$lib/components/SuccessOrError.svelte";
   import type { ActionData, PageServerData } from "./$types";
   import LoadingSpinner from "$lib/components/LoadingSpinner.svelte";
+  import { sending } from "$lib/runes.svelte";
+  import { enhanceForm } from "$lib/utils";
 
   const { data, form }: { data: PageServerData; form: ActionData } = $props();
-
-  let sending = $state(false);
-  let loadingDelay: number;
 </script>
 
 <SuccessOrError success={form?.success} message={form?.message} />
 
-{#if sending}
+{#if sending.value}
   <LoadingSpinner />
 {/if}
 
@@ -35,17 +34,7 @@
     Account registration is disabled on this instance
   </p>
 {:else}
-  <form
-    method="POST"
-    use:enhance={() => {
-      loadingDelay = window.setTimeout(() => (sending = true), 500);
-      return async ({ update }) => {
-        await update();
-        window.clearTimeout(loadingDelay);
-        sending = false;
-      };
-    }}
-  >
+  <form method="POST" use:enhance={enhanceForm()}>
     <label>
       Username:
       <input type="text" name="username" minlength="3" maxlength="16" required />
diff --git a/web-app/src/routes/(authenticated)/+page.svelte b/web-app/src/routes/(authenticated)/+page.svelte
index 498ba84..11c1359 100644
--- a/web-app/src/routes/(authenticated)/+page.svelte
+++ b/web-app/src/routes/(authenticated)/+page.svelte
@@ -6,16 +6,15 @@
   import SuccessOrError from "$lib/components/SuccessOrError.svelte";
   import type { ActionData, PageServerData } from "./$types";
   import LoadingSpinner from "$lib/components/LoadingSpinner.svelte";
+  import { enhanceForm } from "$lib/utils";
+  import { sending } from "$lib/runes.svelte";
 
   const { form, data }: { form: ActionData; data: PageServerData } = $props();
-
-  let sending = $state(false);
-  let loadingDelay: number;
 </script>
 
 <SuccessOrError success={form?.success} message={form?.message} />
 
-{#if sending}
+{#if sending.value}
   <LoadingSpinner />
 {/if}
 
@@ -27,19 +26,7 @@
   <Modal id="create-website" text="Create website">
     <h3>Create website</h3>
 
-    <form
-      method="POST"
-      action="?/createWebsite"
-      use:enhance={() => {
-        loadingDelay = window.setTimeout(() => (sending = true), 500);
-        return async ({ update }) => {
-          await update();
-          window.clearTimeout(loadingDelay);
-          window.location.hash = "!";
-          sending = false;
-        };
-      }}
-    >
+    <form method="POST" action="?/createWebsite" use:enhance={enhanceForm({ closeModal: true })}>
       <label>
         Type:
         <select name="content-type">
@@ -121,15 +108,7 @@
               <form
                 method="POST"
                 action="?/updateWebsite"
-                use:enhance={() => {
-                  loadingDelay = window.setTimeout(() => (sending = true), 500);
-                  return async ({ update }) => {
-                    await update({ reset: false });
-                    window.clearTimeout(loadingDelay);
-                    window.location.hash = "!";
-                    sending = false;
-                  };
-                }}
+                use:enhance={enhanceForm({ reset: false, closeModal: true })}
               >
                 <input type="hidden" name="id" value={id} />
                 <label>
@@ -157,15 +136,7 @@
               <form
                 method="POST"
                 action="?/deleteWebsite"
-                use:enhance={() => {
-                  loadingDelay = window.setTimeout(() => (sending = true), 500);
-                  return async ({ update }) => {
-                    await update();
-                    window.clearTimeout(loadingDelay);
-                    window.location.hash = "!";
-                    sending = false;
-                  };
-                }}
+                use:enhance={enhanceForm({ closeModal: true })}
               >
                 <input type="hidden" name="id" value={id} />
 
diff --git a/web-app/src/routes/(authenticated)/account/+page.svelte b/web-app/src/routes/(authenticated)/account/+page.svelte
index 4e7c239..c465b2e 100644
--- a/web-app/src/routes/(authenticated)/account/+page.svelte
+++ b/web-app/src/routes/(authenticated)/account/+page.svelte
@@ -4,16 +4,15 @@
   import SuccessOrError from "$lib/components/SuccessOrError.svelte";
   import LoadingSpinner from "$lib/components/LoadingSpinner.svelte";
   import type { ActionData, PageServerData } from "./$types";
+  import { enhanceForm } from "$lib/utils";
+  import { sending } from "$lib/runes.svelte";
 
   const { data, form }: { data: PageServerData; form: ActionData } = $props();
-
-  let sending = $state(false);
-  let loadingDelay: number;
 </script>
 
 <SuccessOrError success={form?.success} message={form?.message} />
 
-{#if sending}
+{#if sending.value}
   <LoadingSpinner />
 {/if}
 
@@ -39,18 +38,7 @@
     <a href="#logout">Logout</a>
   </h2>
 
-  <form
-    method="POST"
-    action="?/logout"
-    use:enhance={() => {
-      loadingDelay = window.setTimeout(() => (sending = true), 500);
-      return async ({ update }) => {
-        await update();
-        window.clearTimeout(loadingDelay);
-        sending = false;
-      };
-    }}
-  >
+  <form method="POST" action="?/logout" use:enhance={enhanceForm()}>
     <button type="submit">Logout</button>
   </form>
 </section>
@@ -68,19 +56,7 @@
       Deleting your account will irretrievably erase all data.
     </p>
 
-    <form
-      method="POST"
-      action="?/deleteAccount"
-      use:enhance={() => {
-        loadingDelay = window.setTimeout(() => (sending = true), 500);
-        return async ({ update }) => {
-          await update();
-          window.clearTimeout(loadingDelay);
-          window.location.hash = "!";
-          sending = false;
-        };
-      }}
-    >
+    <form method="POST" action="?/deleteAccount" use:enhance={enhanceForm({ closeModal: true })}>
       <label>
         Password:
         <input type="password" name="password" required />
diff --git a/web-app/src/routes/(authenticated)/website/[websiteId]/+page.server.ts b/web-app/src/routes/(authenticated)/website/[websiteId]/+page.server.ts
index 3a1baa7..e932ba8 100644
--- a/web-app/src/routes/(authenticated)/website/[websiteId]/+page.server.ts
+++ b/web-app/src/routes/(authenticated)/website/[websiteId]/+page.server.ts
@@ -76,8 +76,10 @@ export const actions: Actions = {
       "PATCH",
       {
         body: {
-          accent_color_light_theme: data.get("accent-color-light"),
           accent_color_dark_theme: data.get("accent-color-dark"),
+          accent_color_light_theme: data.get("accent-color-light"),
+          background_color_dark_theme: data.get("background-color-dark"),
+          background_color_light_theme: data.get("background-color-light"),
           favicon_image: uploadedImage.data?.file_id
         },
         successMessage: "Successfully updated global settings"
diff --git a/web-app/src/routes/(authenticated)/website/[websiteId]/+page.svelte b/web-app/src/routes/(authenticated)/website/[websiteId]/+page.svelte
index 723ac10..a537691 100644
--- a/web-app/src/routes/(authenticated)/website/[websiteId]/+page.svelte
+++ b/web-app/src/routes/(authenticated)/website/[websiteId]/+page.svelte
@@ -1,38 +1,24 @@
 <script lang="ts">
   import { enhance } from "$app/forms";
   import WebsiteEditor from "$lib/components/WebsiteEditor.svelte";
-  import { ALLOWED_MIME_TYPES, handleImagePaste } from "$lib/utils";
+  import { ALLOWED_MIME_TYPES } from "$lib/utils";
   import SuccessOrError from "$lib/components/SuccessOrError.svelte";
   import type { ActionData, LayoutServerData, PageServerData } from "./$types";
   import Modal from "$lib/components/Modal.svelte";
   import LoadingSpinner from "$lib/components/LoadingSpinner.svelte";
+  import { enhanceForm } from "$lib/utils";
+  import { sending } from "$lib/runes.svelte";
+  import MarkdownEditor from "$lib/components/MarkdownEditor.svelte";
+  import { previewContent } from "$lib/runes.svelte";
 
   const { data, form }: { data: PageServerData & LayoutServerData; form: ActionData } = $props();
 
-  let previewContent = $state(data.home.main_content);
-  let mainContentTextarea: HTMLTextAreaElement;
-  let textareaScrollTop = $state(0);
-
-  const updateScrollPercentage = () => {
-    const { scrollTop, scrollHeight, clientHeight } = mainContentTextarea;
-    textareaScrollTop = (scrollTop / (scrollHeight - clientHeight)) * 100;
-  };
-
-  const handlePaste = async (event: ClipboardEvent) => {
-    const newContent = await handleImagePaste(event, data.API_BASE_PREFIX);
-
-    if (newContent) {
-      previewContent = newContent;
-    }
-  };
-
-  let sending = $state(false);
-  let loadingDelay: number;
+  previewContent.value = data.home.main_content;
 </script>
 
 <SuccessOrError success={form?.success} message={form?.message} />
 
-{#if sending}
+{#if sending.value}
   <LoadingSpinner />
 {/if}
 
@@ -40,9 +26,6 @@
   id={data.website.id}
   contentType={data.website.content_type}
   title={data.website.title}
-  previewContent={previewContent ||
-    "Put some markdown content in main content to see a live preview here"}
-  previewScrollTop={textareaScrollTop}
 >
   <section id="global">
     <h2>
@@ -52,27 +35,30 @@
       action="?/updateGlobal"
       method="POST"
       enctype="multipart/form-data"
-      use:enhance={() => {
-        loadingDelay = window.setTimeout(() => (sending = true), 500);
-        return async ({ update }) => {
-          await update({ reset: false });
-          window.clearTimeout(loadingDelay);
-          sending = false;
-        };
-      }}
+      use:enhance={enhanceForm({ reset: false })}
     >
       <label>
-        Light accent color:
+        Background color dark theme:
         <input
           type="color"
-          name="accent-color-light"
-          value={data.globalSettings.accent_color_light_theme}
+          name="background-color-dark"
+          value={data.globalSettings.background_color_dark_theme}
           pattern="\S(.*\S)?"
           required
         />
       </label>
       <label>
-        Dark accent color:
+        Background color light theme:
+        <input
+          type="color"
+          name="background-color-light"
+          value={data.globalSettings.background_color_light_theme}
+          pattern="\S(.*\S)?"
+          required
+        />
+      </label>
+      <label>
+        Accent color dark theme:
         <input
           type="color"
           name="accent-color-dark"
@@ -81,6 +67,16 @@
           required
         />
       </label>
+      <label>
+        Accent color light theme:
+        <input
+          type="color"
+          name="accent-color-light"
+          value={data.globalSettings.accent_color_light_theme}
+          pattern="\S(.*\S)?"
+          required
+        />
+      </label>
       <div class="file-field">
         <label>
           Favicon:
@@ -109,14 +105,7 @@
       action="?/updateHeader"
       method="POST"
       enctype="multipart/form-data"
-      use:enhance={() => {
-        loadingDelay = window.setTimeout(() => (sending = true), 500);
-        return async ({ update }) => {
-          await update({ reset: false });
-          window.clearTimeout(loadingDelay);
-          sending = false;
-        };
-      }}
+      use:enhance={enhanceForm({ reset: false })}
     >
       <label>
         Logo type:
@@ -159,30 +148,13 @@
       <a href="#home">Home</a>
     </h2>
 
-    <form
-      action="?/updateHome"
-      method="POST"
-      use:enhance={() => {
-        loadingDelay = window.setTimeout(() => (sending = true), 500);
-        return async ({ update }) => {
-          await update({ reset: false });
-          window.clearTimeout(loadingDelay);
-          sending = false;
-        };
-      }}
-    >
-      <label>
-        Main content:
-        <textarea
-          name="main-content"
-          rows="20"
-          bind:value={previewContent}
-          bind:this={mainContentTextarea}
-          onscroll={updateScrollPercentage}
-          onpaste={handlePaste}
-          required>{data.home.main_content}</textarea
-        >
-      </label>
+    <form action="?/updateHome" method="POST" use:enhance={enhanceForm({ reset: false })}>
+      <MarkdownEditor
+        apiPrefix={data.API_BASE_PREFIX}
+        label="Main content"
+        name="main-content"
+        content={data.home.main_content}
+      />
 
       <button type="submit">Submit</button>
     </form>
@@ -193,18 +165,7 @@
       <a href="#footer">Footer</a>
     </h2>
 
-    <form
-      action="?/updateFooter"
-      method="POST"
-      use:enhance={() => {
-        loadingDelay = window.setTimeout(() => (sending = true), 500);
-        return async ({ update }) => {
-          await update({ reset: false });
-          window.clearTimeout(loadingDelay);
-          sending = false;
-        };
-      }}
-    >
+    <form action="?/updateFooter" method="POST" use:enhance={enhanceForm({ reset: false })}>
       <label>
         Additional text:
         <textarea name="additional-text" rows="5" maxlength="250" required
diff --git a/web-app/src/routes/(authenticated)/website/[websiteId]/articles/+page.svelte b/web-app/src/routes/(authenticated)/website/[websiteId]/articles/+page.svelte
index baf1ed4..a4c4103 100644
--- a/web-app/src/routes/(authenticated)/website/[websiteId]/articles/+page.svelte
+++ b/web-app/src/routes/(authenticated)/website/[websiteId]/articles/+page.svelte
@@ -6,16 +6,18 @@
   import SuccessOrError from "$lib/components/SuccessOrError.svelte";
   import LoadingSpinner from "$lib/components/LoadingSpinner.svelte";
   import type { ActionData, PageServerData } from "./$types";
+  import { enhanceForm } from "$lib/utils";
+  import { sending } from "$lib/runes.svelte";
+  import { previewContent } from "$lib/runes.svelte";
 
   const { data, form }: { data: PageServerData; form: ActionData } = $props();
 
-  let sending = $state(false);
-  let loadingDelay: number;
+  previewContent.value = data.home.main_content;
 </script>
 
 <SuccessOrError success={form?.success} message={form?.message} />
 
-{#if sending}
+{#if sending.value}
   <LoadingSpinner />
 {/if}
 
@@ -23,7 +25,6 @@
   id={data.website.id}
   contentType={data.website.content_type}
   title={data.website.title}
-  previewContent={data.home.main_content}
 >
   <section id="create-article">
     <h2>
@@ -33,19 +34,7 @@
     <Modal id="create-article" text="Create article">
       <h3>Create article</h3>
 
-      <form
-        method="POST"
-        action="?/createArticle"
-        use:enhance={() => {
-          loadingDelay = window.setTimeout(() => (sending = true), 500);
-          return async ({ update }) => {
-            await update();
-            window.clearTimeout(loadingDelay);
-            window.location.hash = "!";
-            sending = false;
-          };
-        }}
-      >
+      <form method="POST" action="?/createArticle" use:enhance={enhanceForm({ closeModal: true })}>
         <label>
           Title:
           <input type="text" name="title" pattern="\S(.*\S)?" maxlength="100" required />
@@ -136,15 +125,7 @@
                 <form
                   method="POST"
                   action="?/deleteArticle"
-                  use:enhance={() => {
-                    loadingDelay = window.setTimeout(() => (sending = true), 500);
-                    return async ({ update }) => {
-                      await update();
-                      window.clearTimeout(loadingDelay);
-                      window.location.hash = "!";
-                      sending = false;
-                    };
-                  }}
+                  use:enhance={enhanceForm({ closeModal: true })}
                 >
                   <input type="hidden" name="id" value={id} />
 
diff --git a/web-app/src/routes/(authenticated)/website/[websiteId]/articles/[articleId]/+page.svelte b/web-app/src/routes/(authenticated)/website/[websiteId]/articles/[articleId]/+page.svelte
index 0fb4884..9ae80b2 100644
--- a/web-app/src/routes/(authenticated)/website/[websiteId]/articles/[articleId]/+page.svelte
+++ b/web-app/src/routes/(authenticated)/website/[websiteId]/articles/[articleId]/+page.svelte
@@ -6,34 +6,19 @@
   import type { ActionData, PageServerData } from "./$types";
   import Modal from "$lib/components/Modal.svelte";
   import LoadingSpinner from "$lib/components/LoadingSpinner.svelte";
-  import { handleImagePaste } from "$lib/utils";
+  import { enhanceForm } from "$lib/utils";
+  import { sending } from "$lib/runes.svelte";
+  import { previewContent } from "$lib/runes.svelte";
+  import MarkdownEditor from "$lib/components/MarkdownEditor.svelte";
 
   const { data, form }: { data: PageServerData; form: ActionData } = $props();
 
-  let previewContent = $state(data.article.main_content);
-  let mainContentTextarea: HTMLTextAreaElement;
-  let textareaScrollTop = $state(0);
-
-  const updateScrollPercentage = () => {
-    const { scrollTop, scrollHeight, clientHeight } = mainContentTextarea;
-    textareaScrollTop = (scrollTop / (scrollHeight - clientHeight)) * 100;
-  };
-
-  const handlePaste = async (event: ClipboardEvent) => {
-    const newContent = await handleImagePaste(event, data.API_BASE_PREFIX);
-
-    if (newContent) {
-      previewContent = newContent;
-    }
-  };
-
-  let sending = $state(false);
-  let loadingDelay: number;
+  previewContent.value = data.article?.main_content ?? "";
 </script>
 
 <SuccessOrError success={form?.success} message={form?.message} />
 
-{#if sending}
+{#if sending.value}
   <LoadingSpinner />
 {/if}
 
@@ -41,9 +26,6 @@
   id={data.website.id}
   contentType={data.website.content_type}
   title={data.website.title}
-  previewContent={previewContent ||
-    "Put some markdown content in main content to see a live preview here"}
-  previewScrollTop={textareaScrollTop}
 >
   <section id="edit-article">
     <h2>
@@ -54,14 +36,7 @@
       method="POST"
       action="?/editArticle"
       enctype="multipart/form-data"
-      use:enhance={() => {
-        loadingDelay = window.setTimeout(() => (sending = true), 500);
-        return async ({ update }) => {
-          await update({ reset: false });
-          window.clearTimeout(loadingDelay);
-          sending = false;
-        };
-      }}
+      use:enhance={enhanceForm({ reset: false })}
     >
       {#if data.website.content_type === "Docs"}
         <label>
@@ -135,18 +110,12 @@
         </div>
       {/if}
 
-      <label>
-        Main content:
-        <textarea
-          name="main-content"
-          rows="20"
-          bind:value={previewContent}
-          bind:this={mainContentTextarea}
-          onscroll={updateScrollPercentage}
-          onpaste={handlePaste}
-          required>{data.article.main_content}</textarea
-        >
-      </label>
+      <MarkdownEditor
+        apiPrefix={data.API_BASE_PREFIX}
+        label="Main content"
+        name="main-content"
+        content={data.article.main_content ?? ""}
+      />
 
       <button type="submit">Submit</button>
     </form>
diff --git a/web-app/src/routes/(authenticated)/website/[websiteId]/categories/+page.svelte b/web-app/src/routes/(authenticated)/website/[websiteId]/categories/+page.svelte
index 5679a9e..d6f43e0 100644
--- a/web-app/src/routes/(authenticated)/website/[websiteId]/categories/+page.svelte
+++ b/web-app/src/routes/(authenticated)/website/[websiteId]/categories/+page.svelte
@@ -5,16 +5,18 @@
   import Modal from "$lib/components/Modal.svelte";
   import LoadingSpinner from "$lib/components/LoadingSpinner.svelte";
   import type { ActionData, PageServerData } from "./$types";
+  import { enhanceForm } from "$lib/utils";
+  import { sending } from "$lib/runes.svelte";
+  import { previewContent } from "$lib/runes.svelte";
 
   const { data, form }: { data: PageServerData; form: ActionData } = $props();
 
-  let sending = $state(false);
-  let loadingDelay: number;
+  previewContent.value = data.home.main_content;
 </script>
 
 <SuccessOrError success={form?.success} message={form?.message} />
 
-{#if sending}
+{#if sending.value}
   <LoadingSpinner />
 {/if}
 
@@ -22,7 +24,6 @@
   id={data.website.id}
   contentType={data.website.content_type}
   title={data.website.title}
-  previewContent={data.home.main_content}
 >
   <section id="create-category">
     <h2>
@@ -32,19 +33,7 @@
     <Modal id="create-category" text="Create category">
       <h3>Create category</h3>
 
-      <form
-        method="POST"
-        action="?/createCategory"
-        use:enhance={() => {
-          loadingDelay = window.setTimeout(() => (sending = true), 500);
-          return async ({ update }) => {
-            await update();
-            window.clearTimeout(loadingDelay);
-            window.location.hash = "!";
-            sending = false;
-          };
-        }}
-      >
+      <form method="POST" action="?/createCategory" use:enhance={enhanceForm({ closeModal: true })}>
         <label>
           Name:
           <input type="text" name="category-name" maxlength="50" required />
@@ -80,15 +69,7 @@
                 <form
                   method="POST"
                   action="?/updateCategory"
-                  use:enhance={() => {
-                    loadingDelay = window.setTimeout(() => (sending = true), 500);
-                    return async ({ update }) => {
-                      await update({ reset: false });
-                      window.clearTimeout(loadingDelay);
-                      window.location.hash = "!";
-                      sending = false;
-                    };
-                  }}
+                  use:enhance={enhanceForm({ reset: false, closeModal: true })}
                 >
                   <input type="hidden" name="category-id" value={id} />
 
@@ -119,15 +100,7 @@
                 <form
                   method="POST"
                   action="?/deleteCategory"
-                  use:enhance={() => {
-                    loadingDelay = window.setTimeout(() => (sending = true), 500);
-                    return async ({ update }) => {
-                      await update();
-                      window.clearTimeout(loadingDelay);
-                      window.location.hash = "!";
-                      sending = false;
-                    };
-                  }}
+                  use:enhance={enhanceForm({ closeModal: true })}
                 >
                   <input type="hidden" name="category-id" value={id} />
 
diff --git a/web-app/src/routes/(authenticated)/website/[websiteId]/collaborators/+page.svelte b/web-app/src/routes/(authenticated)/website/[websiteId]/collaborators/+page.svelte
index 1a5173e..f2efd8e 100644
--- a/web-app/src/routes/(authenticated)/website/[websiteId]/collaborators/+page.svelte
+++ b/web-app/src/routes/(authenticated)/website/[websiteId]/collaborators/+page.svelte
@@ -4,17 +4,18 @@
   import SuccessOrError from "$lib/components/SuccessOrError.svelte";
   import Modal from "$lib/components/Modal.svelte";
   import LoadingSpinner from "$lib/components/LoadingSpinner.svelte";
+  import { enhanceForm } from "$lib/utils";
+  import { previewContent, sending } from "$lib/runes.svelte";
   import type { ActionData, PageServerData } from "./$types";
 
   const { data, form }: { data: PageServerData; form: ActionData } = $props();
 
-  let sending = $state(false);
-  let loadingDelay: number;
+  previewContent.value = data.home.main_content;
 </script>
 
 <SuccessOrError success={form?.success} message={form?.message} />
 
-{#if sending}
+{#if sending.value}
   <LoadingSpinner />
 {/if}
 
@@ -22,7 +23,6 @@
   id={data.website.id}
   contentType={data.website.content_type}
   title={data.website.title}
-  previewContent={data.home.main_content}
 >
   <section id="add-collaborator">
     <h2>
@@ -35,15 +35,7 @@
       <form
         method="POST"
         action="?/addCollaborator"
-        use:enhance={() => {
-          loadingDelay = window.setTimeout(() => (sending = true), 500);
-          return async ({ update }) => {
-            await update();
-            window.clearTimeout(loadingDelay);
-            window.location.hash = "!";
-            sending = false;
-          };
-        }}
+        use:enhance={enhanceForm({ closeModal: true })}
       >
         <label>
           Username:
@@ -84,15 +76,7 @@
                 <form
                   method="POST"
                   action="?/updateCollaborator"
-                  use:enhance={() => {
-                    loadingDelay = window.setTimeout(() => (sending = true), 500);
-                    return async ({ update }) => {
-                      await update({ reset: false });
-                      window.clearTimeout(loadingDelay);
-                      window.location.hash = "!";
-                      sending = false;
-                    };
-                  }}
+                  use:enhance={enhanceForm({ reset: false, closeModal: true })}
                 >
                   <input type="hidden" name="user-id" value={user_id} />
 
@@ -116,15 +100,7 @@
                 <form
                   method="POST"
                   action="?/removeCollaborator"
-                  use:enhance={() => {
-                    loadingDelay = window.setTimeout(() => (sending = true), 500);
-                    return async ({ update }) => {
-                      await update();
-                      window.clearTimeout(loadingDelay);
-                      window.location.hash = "!";
-                      sending = false;
-                    };
-                  }}
+                  use:enhance={enhanceForm({ closeModal: true })}
                 >
                   <input type="hidden" name="user-id" value={user_id} />
 
diff --git a/web-app/src/routes/(authenticated)/website/[websiteId]/legal-information/+page.server.ts b/web-app/src/routes/(authenticated)/website/[websiteId]/legal-information/+page.server.ts
index 3b6507f..7188599 100644
--- a/web-app/src/routes/(authenticated)/website/[websiteId]/legal-information/+page.server.ts
+++ b/web-app/src/routes/(authenticated)/website/[websiteId]/legal-information/+page.server.ts
@@ -23,7 +23,8 @@ export const load: PageServerLoad = async ({ parent, fetch, params }) => {
 
   return {
     legalInformation,
-    website
+    website,
+    API_BASE_PREFIX
   };
 };
 
diff --git a/web-app/src/routes/(authenticated)/website/[websiteId]/legal-information/+page.svelte b/web-app/src/routes/(authenticated)/website/[websiteId]/legal-information/+page.svelte
index 38c8e7d..b00f2d0 100644
--- a/web-app/src/routes/(authenticated)/website/[websiteId]/legal-information/+page.svelte
+++ b/web-app/src/routes/(authenticated)/website/[websiteId]/legal-information/+page.svelte
@@ -4,26 +4,19 @@
   import SuccessOrError from "$lib/components/SuccessOrError.svelte";
   import LoadingSpinner from "$lib/components/LoadingSpinner.svelte";
   import Modal from "$lib/components/Modal.svelte";
+  import { enhanceForm } from "$lib/utils";
+  import { sending, previewContent } from "$lib/runes.svelte";
   import type { ActionData, PageServerData } from "./$types";
+  import MarkdownEditor from "$lib/components/MarkdownEditor.svelte";
 
   const { data, form }: { data: PageServerData; form: ActionData } = $props();
 
-  let previewContent = $state(data.legalInformation?.main_content);
-  let mainContentTextarea: HTMLTextAreaElement;
-  let textareaScrollTop = $state(0);
-
-  const updateScrollPercentage = () => {
-    const { scrollTop, scrollHeight, clientHeight } = mainContentTextarea;
-    textareaScrollTop = (scrollTop / (scrollHeight - clientHeight)) * 100;
-  };
-
-  let sending = $state(false);
-  let loadingDelay: number;
+  previewContent.value = data.legalInformation?.main_content ?? "";
 </script>
 
 <SuccessOrError success={form?.success} message={form?.message} />
 
-{#if sending}
+{#if sending.value}
   <LoadingSpinner />
 {/if}
 
@@ -31,9 +24,6 @@
   id={data.website.id}
   contentType={data.website.content_type}
   title={data.website.title}
-  previewContent={previewContent ||
-    "Put some markdown content in main content to see a live preview here"}
-  previewScrollTop={textareaScrollTop}
 >
   <section id="legal-information">
     <h2>
@@ -62,29 +52,14 @@
     <form
       method="POST"
       action="?/createUpdateLegalInformation"
-      use:enhance={() => {
-        loadingDelay = window.setTimeout(() => (sending = true), 500);
-        return async ({ update }) => {
-          await update({ reset: false });
-          window.clearTimeout(loadingDelay);
-          sending = false;
-        };
-      }}
+      use:enhance={enhanceForm({ reset: false })}
     >
-      <label>
-        Main content:
-        <textarea
-          name="main-content"
-          rows="20"
-          placeholder="## Impressum
-
-## Privacy policy"
-          bind:value={previewContent}
-          bind:this={mainContentTextarea}
-          onscroll={updateScrollPercentage}
-          required>{data.legalInformation?.main_content ?? ""}</textarea
-        >
-      </label>
+      <MarkdownEditor
+        apiPrefix={data.API_BASE_PREFIX}
+        label="Main content"
+        name="main-content"
+        content={data.legalInformation?.main_content ?? ""}
+      />
 
       <button type="submit">Submit</button>
     </form>
@@ -94,15 +69,7 @@
         <form
           action="?/deleteLegalInformation"
           method="post"
-          use:enhance={() => {
-            loadingDelay = window.setTimeout(() => (sending = true), 500);
-            return async ({ update }) => {
-              await update();
-              window.clearTimeout(loadingDelay);
-              window.location.hash = "!";
-              sending = false;
-            };
-          }}
+          use:enhance={enhanceForm({ closeModal: true })}
         >
           <h3>Delete legal information</h3>
           <p>
diff --git a/web-app/src/routes/(authenticated)/website/[websiteId]/logs/+page.svelte b/web-app/src/routes/(authenticated)/website/[websiteId]/logs/+page.svelte
index 06e02a7..3bcf0ba 100644
--- a/web-app/src/routes/(authenticated)/website/[websiteId]/logs/+page.svelte
+++ b/web-app/src/routes/(authenticated)/website/[websiteId]/logs/+page.svelte
@@ -6,6 +6,8 @@
   import diff from "fast-diff";
   import { page } from "$app/stores";
   import { tables } from "$lib/db-schema";
+  import { previewContent } from "$lib/runes.svelte";
+  import { sanitize } from "isomorphic-dompurify";
 
   const { data }: { data: PageServerData } = $props();
 
@@ -45,6 +47,8 @@
     resources = restTables;
   }
 
+  previewContent.value = data.home.main_content;
+
   let logsSection: HTMLElement;
 </script>
 
@@ -52,7 +56,6 @@
   id={data.website.id}
   contentType={data.website.content_type}
   title={data.website.title}
-  previewContent={data.home.main_content}
 >
   <section id="logs" bind:this={logsSection}>
     <hgroup>
@@ -153,7 +156,9 @@
                     <p>{table_name} &mdash; {operation}</p>
                   </hgroup>
 
-                  <pre style="white-space: pre-wrap">{@html htmlDiff(oldValue, newValue)}</pre>
+                  <pre style="white-space: pre-wrap">{@html sanitize(htmlDiff(oldValue, newValue), {
+                      ALLOWED_TAGS: ["ins", "del"]
+                    })}</pre>
                 </Modal>
               </td>
             </tr>
diff --git a/web-app/src/routes/(authenticated)/website/[websiteId]/publish/+page.server.ts b/web-app/src/routes/(authenticated)/website/[websiteId]/publish/+page.server.ts
index 5abd18e..ea8a1a3 100644
--- a/web-app/src/routes/(authenticated)/website/[websiteId]/publish/+page.server.ts
+++ b/web-app/src/routes/(authenticated)/website/[websiteId]/publish/+page.server.ts
@@ -1,14 +1,14 @@
-import { readFile, mkdir, writeFile, rename } from "node:fs/promises";
-import { join } from "node:path";
-import { type WebsiteOverview, slugify } from "$lib/utils";
-import type { Actions, PageServerLoad } from "./$types";
-import { API_BASE_PREFIX, apiRequest } from "$lib/server/utils";
-import { render } from "svelte/server";
-import BlogIndex from "$lib/templates/blog/BlogIndex.svelte";
-import BlogArticle from "$lib/templates/blog/BlogArticle.svelte";
-import DocsIndex from "$lib/templates/docs/DocsIndex.svelte";
-import DocsArticle from "$lib/templates/docs/DocsArticle.svelte";
 import { dev } from "$app/environment";
+import { API_BASE_PREFIX, apiRequest } from "$lib/server/utils";
+import BlogArticle from "$lib/templates/blog/BlogArticle.svelte";
+import BlogIndex from "$lib/templates/blog/BlogIndex.svelte";
+import DocsArticle from "$lib/templates/docs/DocsArticle.svelte";
+import DocsIndex from "$lib/templates/docs/DocsIndex.svelte";
+import { type WebsiteOverview, hexToHSL, slugify } from "$lib/utils";
+import { mkdir, readFile, rename, writeFile } from "node:fs/promises";
+import { join } from "node:path";
+import { render } from "svelte/server";
+import type { Actions, PageServerLoad } from "./$types";
 
 export const load: PageServerLoad = async ({ params, fetch }) => {
   const websiteOverview: WebsiteOverview = (
@@ -169,8 +169,6 @@ const generateStaticFiles = async (websiteData: WebsiteOverview, isPreview = tru
 </html>`;
   };
 
-  console.log(websiteData);
-
   const { head, body } = render(websiteData.content_type === "Blog" ? BlogIndex : DocsIndex, {
     props: {
       websiteOverview: websiteData,
@@ -235,21 +233,35 @@ const generateStaticFiles = async (websiteData: WebsiteOverview, isPreview = tru
       encoding: "utf-8"
     }
   );
+
+  const {
+    h: hDark,
+    s: sDark,
+    l: lDark
+  } = hexToHSL(websiteData.settings.background_color_dark_theme);
+  const {
+    h: hLight,
+    s: sLight,
+    l: lLight
+  } = hexToHSL(websiteData.settings.background_color_light_theme);
+
   await writeFile(
     join(uploadDir, "styles.css"),
     commonStyles
       .concat(specificStyles)
+      .replace(/(?<=\/\* BACKGROUND_COLOR_DARK_THEME_H \*\/\s*).*(?=;)/, ` ${hDark}`)
+      .replace(/(?<=\/\* BACKGROUND_COLOR_DARK_THEME_S \*\/\s*).*(?=;)/, ` ${sDark}%`)
+      .replace(/(?<=\/\* BACKGROUND_COLOR_DARK_THEME_L \*\/\s*).*(?=;)/, ` ${lDark}%`)
+      .replace(/(?<=\/\* BACKGROUND_COLOR_LIGHT_THEME_H \*\/\s*).*(?=;)/, ` ${hLight}`)
+      .replace(/(?<=\/\* BACKGROUND_COLOR_LIGHT_THEME_S \*\/\s*).*(?=;)/, ` ${sLight}%`)
+      .replace(/(?<=\/\* BACKGROUND_COLOR_LIGHT_THEME_L \*\/\s*).*(?=;)/, ` ${lLight}%`)
       .replace(
-        /--color-accent:\s*(.*?);/,
-        `--color-accent: ${websiteData.settings.accent_color_dark_theme};`
+        /(?<=\/\* ACCENT_COLOR_DARK_THEME \*\/\s*).*(?=;)/,
+        ` ${websiteData.settings.accent_color_dark_theme}`
       )
       .replace(
-        /@media\s*\(prefers-color-scheme:\s*dark\)\s*{[^}]*--color-accent:\s*(.*?);/,
-        (match) =>
-          match.replace(
-            /--color-accent:\s*(.*?);/,
-            `--color-accent: ${websiteData.settings.accent_color_light_theme};`
-          )
+        /(?<=\/\* ACCENT_COLOR_LIGHT_THEME \*\/\s*).*(?=;)/,
+        ` ${websiteData.settings.accent_color_light_theme}`
       )
   );
 };
diff --git a/web-app/src/routes/(authenticated)/website/[websiteId]/publish/+page.svelte b/web-app/src/routes/(authenticated)/website/[websiteId]/publish/+page.svelte
index c91f928..51d231f 100644
--- a/web-app/src/routes/(authenticated)/website/[websiteId]/publish/+page.svelte
+++ b/web-app/src/routes/(authenticated)/website/[websiteId]/publish/+page.svelte
@@ -5,16 +5,18 @@
   import type { ActionData, PageServerData } from "./$types";
   import LoadingSpinner from "$lib/components/LoadingSpinner.svelte";
   import Modal from "$lib/components/Modal.svelte";
+  import { enhanceForm } from "$lib/utils";
+  import { sending } from "$lib/runes.svelte";
+  import { previewContent } from "$lib/runes.svelte";
 
   const { data, form }: { data: PageServerData; form: ActionData } = $props();
 
-  let sending = $state(false);
-  let loadingDelay: number;
+  previewContent.value = data.websitePreviewUrl;
 </script>
 
 <SuccessOrError success={form?.success} message={form?.message} />
 
-{#if sending}
+{#if sending.value}
   <LoadingSpinner />
 {/if}
 
@@ -22,7 +24,6 @@
   id={data.websiteOverview.id}
   contentType={data.websiteOverview.content_type}
   title={data.websiteOverview.title}
-  previewContent={data.websitePreviewUrl}
   fullPreview={true}
 >
   <section id="publish-website">
@@ -34,18 +35,7 @@
       is published. If you are happy with the results, click the button below and your website will
       be published on the Internet.
     </p>
-    <form
-      method="POST"
-      action="?/publishWebsite"
-      use:enhance={() => {
-        loadingDelay = window.setTimeout(() => (sending = true), 500);
-        return async ({ update }) => {
-          await update();
-          window.clearTimeout(loadingDelay);
-          sending = false;
-        };
-      }}
-    >
+    <form method="POST" action="?/publishWebsite" use:enhance={enhanceForm()}>
       <button type="submit">Publish</button>
     </form>
   </section>
@@ -69,14 +59,7 @@
       <form
         method="POST"
         action="?/createUpdateCustomDomainPrefix"
-        use:enhance={() => {
-          loadingDelay = window.setTimeout(() => (sending = true), 500);
-          return async ({ update }) => {
-            await update();
-            window.clearTimeout(loadingDelay);
-            sending = false;
-          };
-        }}
+        use:enhance={enhanceForm({ reset: false })}
       >
         <label>
           Prefix:
@@ -98,15 +81,7 @@
           <form
             action="?/deleteCustomDomainPrefix"
             method="post"
-            use:enhance={() => {
-              loadingDelay = window.setTimeout(() => (sending = true), 500);
-              return async ({ update }) => {
-                await update();
-                window.clearTimeout(loadingDelay);
-                window.location.hash = "!";
-                sending = false;
-              };
-            }}
+            use:enhance={enhanceForm({ closeModal: true })}
           >
             <h3>Delete domain prefix</h3>
             <p>
diff --git a/web-app/src/routes/+layout.svelte b/web-app/src/routes/+layout.svelte
index 43f6191..0f96940 100644
--- a/web-app/src/routes/+layout.svelte
+++ b/web-app/src/routes/+layout.svelte
@@ -5,6 +5,7 @@
   import type { Snippet } from "svelte";
   import { navigating } from "$app/stores";
   import LoadingSpinner from "$lib/components/LoadingSpinner.svelte";
+  import { LOADING_DELAY } from "$lib/utils";
 
   const { data, children }: { data: LayoutServerData; children: Snippet } = $props();
 
@@ -20,7 +21,7 @@
 
   $effect(() => {
     if ($navigating && ["link", "goto"].includes($navigating.type)) {
-      loadingDelay = window.setTimeout(() => (loading = true), 500);
+      loadingDelay = window.setTimeout(() => (loading = true), LOADING_DELAY);
     } else {
       window.clearTimeout(loadingDelay);
       loading = false;
diff --git a/web-app/svelte.config.js b/web-app/svelte.config.js
index c2ee0a3..9102b2b 100644
--- a/web-app/svelte.config.js
+++ b/web-app/svelte.config.js
@@ -18,10 +18,10 @@ const config = {
         "default-src": ["none"],
         "script-src": ["self"],
         "style-src": ["self", "https:", "unsafe-inline"],
-        "img-src": ["self", "data:", "https:"],
+        "img-src": ["self", "data:", "https:", "http:"],
         "font-src": ["self", "https:"],
         "connect-src": ["self"],
-        "frame-src": ["self", "https:"],
+        "frame-src": ["self", "https:", "http:"],
         "object-src": ["none"],
         "base-uri": ["self"],
         "frame-ancestors": ["none"],
diff --git a/web-app/template-styles/common-styles.css b/web-app/template-styles/common-styles.css
index c2243e6..5b83a37 100644
--- a/web-app/template-styles/common-styles.css
+++ b/web-app/template-styles/common-styles.css
@@ -19,17 +19,22 @@
 }
 
 :root {
-  --bg-primary: white;
-  --bg-secondary: hsl(0 0% 95%);
-  --bg-tertiary: hsl(0 0% 90%);
-  --bg-blurred: rgba(255, 255, 255, 0.5);
+  --bg-primary-h: /* BACKGROUND_COLOR_LIGHT_THEME_H */ 0;
+  --bg-primary-s: /* BACKGROUND_COLOR_LIGHT_THEME_S */ 0%;
+  --bg-primary-l: /* BACKGROUND_COLOR_LIGHT_THEME_L */ 100%;
+  --bg-primary: hsl(var(--bg-primary-h) var(--bg-primary-s) var(--bg-primary-l));
+  --bg-secondary: hsl(var(--bg-primary-h) var(--bg-primary-s) calc(var(--bg-primary-l) - 5%));
+  --bg-tertiary: hsl(var(--bg-primary-h) var(--bg-primary-s) calc(var(--bg-primary-l) - 10%));
+  --bg-blurred: hsla(
+    var(--bg-primary-h) var(--bg-primary-s) var(--bg-primary-l) / calc(var(--bg-primary-l) - 20%)
+  );
 
-  --color-text: black;
-  --color-text-invert: white;
-  --color-border: hsl(0 0% 50%);
-  --color-accent: hsl(210, 100%, 30%);
-  --color-success: hsl(105, 100%, 30%);
-  --color-error: hsl(0, 100%, 30%);
+  --color-text: hsl(var(--bg-primary-h) var(--bg-primary-s) 0%);
+  --color-text-invert: var(--bg-primary);
+  --color-border: hsl(var(--bg-primary-h) var(--bg-primary-s) calc(var(--bg-primary-l) - 50%));
+  --color-accent: /* ACCENT_COLOR_LIGHT_THEME */ hsl(210 100% 30%);
+  --color-success: hsl(105 100% 30%);
+  --color-error: hsl(0 100% 30%);
 
   --border-primary: 0.0625rem solid var(--color-border);
   --border-radius: 0.125rem;
@@ -73,16 +78,22 @@
 
 @media (prefers-color-scheme: dark) {
   :root {
-    --bg-primary: hsl(0 0% 15%);
-    --bg-secondary: hsl(0 0% 20%);
-    --bg-tertiary: hsl(0 0% 25%);
-    --bg-blurred: rgba(0, 0, 0, 0.5);
+    --bg-primary-h: /* BACKGROUND_COLOR_DARK_THEME_H */ 0;
+    --bg-primary-s: /* BACKGROUND_COLOR_DARK_THEME_S */ 0%;
+    --bg-primary-l: /* BACKGROUND_COLOR_DARK_THEME_L */ 15%;
+    --bg-primary: hsl(var(--bg-primary-h) var(--bg-primary-s) var(--bg-primary-l));
+    --bg-secondary: hsl(var(--bg-primary-h) var(--bg-primary-s) calc(var(--bg-primary-l) + 5%));
+    --bg-tertiary: hsl(var(--bg-primary-h) var(--bg-primary-s) calc(var(--bg-primary-l) + 10%));
+    --bg-blurred: hsla(
+      var(--bg-primary-h) var(--bg-primary-s) var(--bg-primary-l) / calc(var(--bg-primary-l) + 20%)
+    );
 
-    --color-text: white;
-    --color-text-invert: black;
-    --color-accent: hsl(210, 100%, 80%);
-    --color-success: hsl(105, 100%, 80%);
-    --color-error: hsl(0, 100%, 80%);
+    --color-text: hsl(var(--bg-primary-h) var(--bg-primary-s) 100%);
+    --color-text-invert: var(--bg-primary);
+    --color-border: hsl(var(--bg-primary-h) var(--bg-primary-s) calc(var(--bg-primary-l) + 50%));
+    --color-accent: /* ACCENT_COLOR_DARK_THEME */ hsl(210 100% 80%);
+    --color-success: hsl(105 100% 80%);
+    --color-error: hsl(0 100% 80%);
 
     color-scheme: dark;
   }
diff --git a/web-app/tests/collaborator.spec.ts b/web-app/tests/collaborator.spec.ts
index 1a67c62..204ace2 100644
--- a/web-app/tests/collaborator.spec.ts
+++ b/web-app/tests/collaborator.spec.ts
@@ -99,8 +99,8 @@ test.describe.serial("Collaborator tests", () => {
     await page.getByRole("button", { name: "Submit" }).click();
 
     await page.getByRole("link", { name: "Legal information" }).click();
-    await page.getByPlaceholder("## Impressum\n\n## Privacy policy").click();
-    await page.getByPlaceholder("## Impressum\n\n## Privacy policy").fill("## Content");
+    await page.getByLabel("Main content:").click();
+    await page.getByLabel("Main content:").fill("## Content");
     await page.getByRole("button", { name: "Submit" }).click();
   });
 
@@ -330,8 +330,8 @@ test.describe.serial("Collaborator tests", () => {
       test("Create/Update legal information", async ({ page }) => {
         await page.getByRole("link", { name: "Blog" }).click();
         await page.getByRole("link", { name: "Legal information" }).click();
-        await page.getByPlaceholder("## Impressum\n\n## Privacy policy").click();
-        await page.getByPlaceholder("## Impressum\n\n## Privacy policy").fill("## Content");
+        await page.getByLabel("Main content:").click();
+        await page.getByLabel("Main content:").fill("## Content");
         await page.getByRole("button", { name: "Submit" }).click();
 
         if (permissionLevel === 30) {
@@ -340,8 +340,8 @@ test.describe.serial("Collaborator tests", () => {
           await expect(page.getByText("Insufficient permissions")).toBeVisible();
         }
 
-        await page.getByPlaceholder("## Impressum\n\n## Privacy policy").click();
-        await page.getByPlaceholder("## Impressum\n\n## Privacy policy").fill("## Content updated");
+        await page.getByLabel("Main content:").click();
+        await page.getByLabel("Main content:").fill("## Content updated");
         await page.getByRole("button", { name: "Submit" }).click();
 
         if (permissionLevel === 30) {
diff --git a/web-app/tests/website.spec.ts b/web-app/tests/website.spec.ts
index c9a741e..1cbcf4d 100644
--- a/web-app/tests/website.spec.ts
+++ b/web-app/tests/website.spec.ts
@@ -235,13 +235,13 @@ test.describe.serial("Website tests", () => {
       test("Create/Update legal information", async ({ authenticatedPage: page }) => {
         await page.getByRole("link", { name: "Blog" }).click();
         await page.getByRole("link", { name: "Legal information" }).click();
-        await page.getByPlaceholder("## Impressum\n\n## Privacy policy").click();
-        await page.getByPlaceholder("## Impressum\n\n## Privacy policy").fill("## Content");
+        await page.getByLabel("Main content:").click();
+        await page.getByLabel("Main content:").fill("## Content");
         await page.getByRole("button", { name: "Submit" }).click();
         await expect(page.getByText("Successfully created/updated legal")).toBeVisible();
 
-        await page.getByPlaceholder("## Impressum\n\n## Privacy policy").click();
-        await page.getByPlaceholder("## Impressum\n\n## Privacy policy").fill("## Content updated");
+        await page.getByLabel("Main content:").click();
+        await page.getByLabel("Main content:").fill("## Content updated");
         await page.getByRole("button", { name: "Submit" }).click();
         await expect(page.getByText("Successfully created/updated legal")).toBeVisible();
       });