diff --git a/app/components/RichTextEditor.tsx b/app/components/RichTextEditor.tsx
index fc2c6f8..c9f9766 100644
--- a/app/components/RichTextEditor.tsx
+++ b/app/components/RichTextEditor.tsx
@@ -2,8 +2,19 @@ import { useEditor, EditorContent } from "@tiptap/react";
 import StarterKit from "@tiptap/starter-kit";
 import Link from "@tiptap/extension-link";
 import Image from "@tiptap/extension-image";
+import { TextStyle } from "@tiptap/extension-text-style";
+import { Color } from "@tiptap/extension-color";
 import { useEffect, useState } from "react";
 
+const PRESET_COLORS = [
+  { name: "Default", value: null as string | null },
+  { name: "LinumIQ blue", value: "#0883DA" },
+  { name: "Black", value: "#000000" },
+  { name: "Grey", value: "#6d7175" },
+  { name: "Red", value: "#d72c0d" },
+  { name: "Green", value: "#1a7e3a" },
+];
+
 interface RichTextEditorProps {
   /** Hidden form field name; the rendered HTML is mirrored into it. */
   name: string;
@@ -70,6 +81,8 @@ export function RichTextEditor({
           };
         },
       }).configure({ inline: false, allowBase64: true }),
+      TextStyle,
+      Color,
     ],
     content: swapCidToLogo(defaultValue || "<p></p>", logoDataUrl),
     editorProps: {
@@ -190,6 +203,8 @@ export function RichTextEditor({
           title="Insert/remove link"
         />
         <Sep />
+        <ColorMenu editor={editor} />
+        <Sep />
         <ToolbarButton
           onClick={() => editor?.chain().focus().undo().run()}
           active={false}
@@ -276,6 +291,51 @@ function Sep() {
   return <span aria-hidden style={{ width: 1, background: "#c9cccf", margin: "2px 4px" }} />;
 }
 
+function ColorMenu({ editor }: { editor: ReturnType<typeof useEditor> | null }) {
+  if (!editor) return null;
+  return (
+    <span style={{ display: "inline-flex", gap: 2, alignItems: "center" }} title="Text colour">
+      {PRESET_COLORS.map((c) => (
+        <button
+          key={c.name}
+          type="button"
+          onClick={() =>
+            c.value
+              ? editor.chain().focus().setColor(c.value).run()
+              : editor.chain().focus().unsetColor().run()
+          }
+          title={c.name}
+          style={{
+            width: 20,
+            height: 20,
+            border: "1px solid #c9cccf",
+            borderRadius: 4,
+            background: c.value ?? "#fff",
+            cursor: "pointer",
+            position: "relative",
+          }}
+        >
+          {c.value === null ? (
+            <span
+              aria-hidden
+              style={{
+                position: "absolute",
+                inset: 0,
+                display: "flex",
+                alignItems: "center",
+                justifyContent: "center",
+                fontSize: 11,
+              }}
+            >
+              ×
+            </span>
+          ) : null}
+        </button>
+      ))}
+    </span>
+  );
+}
+
 /**
  * Replaces `src="cid:invoice-logo"` with the supplied URL so the editor
  * can display the actual logo. Done as a string replace because TipTap
diff --git a/app/services/invoice/emailTemplates.ts b/app/services/invoice/emailTemplates.ts
index b3a00b4..4d1f8e0 100644
--- a/app/services/invoice/emailTemplates.ts
+++ b/app/services/invoice/emailTemplates.ts
@@ -9,8 +9,8 @@
  */
 
 const DE_HTML = `\
-<h2 style="color:#3070c0;margin:0 0 8px;font-family:Arial,Helvetica,sans-serif;">{{companyName}}</h2>
-<h3 style="color:#3070c0;margin:0 0 16px;font-family:Arial,Helvetica,sans-serif;">Danke für deinen Einkauf!</h3>
+<h2 style="margin:0 0 8px;font-family:Arial,Helvetica,sans-serif;"><span style="color:#0883DA">{{companyName}}</span></h2>
+<h3 style="margin:0 0 16px;font-family:Arial,Helvetica,sans-serif;"><span style="color:#0883DA">Danke für deinen Einkauf!</span></h3>
 <p style="font-family:Arial,Helvetica,sans-serif;font-size:14px;line-height:1.5;">
 Die Rechnung befindet sich im Anhang.
 </p>
@@ -22,14 +22,14 @@ Besten Dank!
 <p style="margin-top:24px;">
 <img src="cid:invoice-logo" alt="{{companyName}}" style="max-height:48px;">
 </p>
-<p style="font-family:Arial,Helvetica,sans-serif;font-size:13px;line-height:1.6;color:#3070c0;">
-✉ <a href="mailto:{{shopEmail}}" style="color:#3070c0;">Kontakt</a><br>
-🌐 <a href="{{shopWebsite}}" style="color:#3070c0;">{{shopWebsite}}</a>
+<p style="font-family:Arial,Helvetica,sans-serif;font-size:13px;line-height:1.6;color:#0883DA;">
+✉ <a href="mailto:{{shopEmail}}" style="color:#0883DA;">Kontakt</a><br>
+🌐 <a href="{{shopWebsite}}" style="color:#0883DA;">{{shopWebsite}}</a>
 </p>`;
 
 const EN_HTML = `\
-<h2 style="color:#3070c0;margin:0 0 8px;font-family:Arial,Helvetica,sans-serif;">{{companyName}}</h2>
-<h3 style="color:#3070c0;margin:0 0 16px;font-family:Arial,Helvetica,sans-serif;">Thank you for your purchase!</h3>
+<h2 style="margin:0 0 8px;font-family:Arial,Helvetica,sans-serif;"><span style="color:#0883DA">{{companyName}}</span></h2>
+<h3 style="margin:0 0 16px;font-family:Arial,Helvetica,sans-serif;"><span style="color:#0883DA">Thank you for your purchase!</span></h3>
 <p style="font-family:Arial,Helvetica,sans-serif;font-size:14px;line-height:1.5;">
 Please find the invoice attached.
 </p>
@@ -41,9 +41,9 @@ Thanks a lot!
 <p style="margin-top:24px;">
 <img src="cid:invoice-logo" alt="{{companyName}}" style="max-height:48px;">
 </p>
-<p style="font-family:Arial,Helvetica,sans-serif;font-size:13px;line-height:1.6;color:#3070c0;">
-✉ <a href="mailto:{{shopEmail}}" style="color:#3070c0;">Contact</a><br>
-🌐 <a href="{{shopWebsite}}" style="color:#3070c0;">{{shopWebsite}}</a>
+<p style="font-family:Arial,Helvetica,sans-serif;font-size:13px;line-height:1.6;color:#0883DA;">
+✉ <a href="mailto:{{shopEmail}}" style="color:#0883DA;">Contact</a><br>
+🌐 <a href="{{shopWebsite}}" style="color:#0883DA;">{{shopWebsite}}</a>
 </p>`;
 
 export const DEFAULT_EMAIL_SUBJECT_DE = "Rechnung {{invoiceNumber}} – {{companyName}}";
diff --git a/package-lock.json b/package-lock.json
index a4031f8..199471e 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -18,8 +18,10 @@
         "@shopify/app-bridge-react": "^4.2.4",
         "@shopify/shopify-app-react-router": "^1.1.0",
         "@shopify/shopify-app-session-storage-prisma": "^8.0.0",
+        "@tiptap/extension-color": "^3.23.1",
         "@tiptap/extension-image": "^3.23.1",
         "@tiptap/extension-link": "^3.23.1",
+        "@tiptap/extension-text-style": "^3.23.1",
         "@tiptap/pm": "^3.23.1",
         "@tiptap/react": "^3.23.1",
         "@tiptap/starter-kit": "^3.23.1",
@@ -4262,6 +4264,19 @@
         "@tiptap/pm": "3.23.1"
       }
     },
+    "node_modules/@tiptap/extension-color": {
+      "version": "3.23.1",
+      "resolved": "https://registry.npmjs.org/@tiptap/extension-color/-/extension-color-3.23.1.tgz",
+      "integrity": "sha512-OYk/fT3h8Bz4B6GUVTQDvKGpPnpI5d6QHkuqjVhdFsgH3oo58PdLE1TdIGgeavuYPLaFxgBtEXmm3oTY9jPWxw==",
+      "license": "MIT",
+      "funding": {
+        "type": "github",
+        "url": "https://github.com/sponsors/ueberdosis"
+      },
+      "peerDependencies": {
+        "@tiptap/extension-text-style": "3.23.1"
+      }
+    },
     "node_modules/@tiptap/extension-document": {
       "version": "3.23.1",
       "resolved": "https://registry.npmjs.org/@tiptap/extension-document/-/extension-document-3.23.1.tgz",
@@ -4492,6 +4507,19 @@
         "@tiptap/core": "3.23.1"
       }
     },
+    "node_modules/@tiptap/extension-text-style": {
+      "version": "3.23.1",
+      "resolved": "https://registry.npmjs.org/@tiptap/extension-text-style/-/extension-text-style-3.23.1.tgz",
+      "integrity": "sha512-q3GQQo+lBhrtNkqdbhYWnv/byG/RYAxVnNhYPQMubRzavGdXBU8NhpJ/47YYjPimG1sahzcs2aqy7amVd8ri/A==",
+      "license": "MIT",
+      "funding": {
+        "type": "github",
+        "url": "https://github.com/sponsors/ueberdosis"
+      },
+      "peerDependencies": {
+        "@tiptap/core": "3.23.1"
+      }
+    },
     "node_modules/@tiptap/extension-underline": {
       "version": "3.23.1",
       "resolved": "https://registry.npmjs.org/@tiptap/extension-underline/-/extension-underline-3.23.1.tgz",
diff --git a/package.json b/package.json
index 11cfb07..387aaf3 100644
--- a/package.json
+++ b/package.json
@@ -33,8 +33,10 @@
     "@shopify/app-bridge-react": "^4.2.4",
     "@shopify/shopify-app-react-router": "^1.1.0",
     "@shopify/shopify-app-session-storage-prisma": "^8.0.0",
+    "@tiptap/extension-color": "^3.23.1",
     "@tiptap/extension-image": "^3.23.1",
     "@tiptap/extension-link": "^3.23.1",
+    "@tiptap/extension-text-style": "^3.23.1",
     "@tiptap/pm": "^3.23.1",
     "@tiptap/react": "^3.23.1",
     "@tiptap/starter-kit": "^3.23.1",