Update content page background

lib/validation.js

@@ -54,6 +54,17 @@ export const BLOG_POST_SCHEMA = {
       },
     },
   },
+  background: {
+    type: "object",
+    required: false,
+    default: null,
+    properties: {
+      color: {
+        type: "string",
+        required: false,
+      },
+    },
+  },
 };
 
 /**
@@ -149,8 +160,11 @@ export function sanitizeBlogPost(frontmatter) {
 
   for (const [field, config] of Object.entries(BLOG_POST_SCHEMA)) {
     if (frontmatter[field] !== undefined) {
-      // Special handling for thumbnail object
-      if (field === "thumbnail" && typeof frontmatter[field] === "object") {
+      // Special handling for thumbnail and background objects
+      if (
+        (field === "thumbnail" || field === "background") &&
+        typeof frontmatter[field] === "object"
+      ) {
         sanitized[field] = frontmatter[field];
       } else {
         sanitized[field] = frontmatter[field];