got it to work

extension-playwright/manifest.json

@@ -1,8 +1,8 @@
 {
   "manifest_version": 3,
-  "name": "Playwright MCP Bridge",
+  "name": "Playwriter",
   "version": "0.0.47",
-  "description": "Click to attach debugger to current tab",
+  "description": "Playwriter MCP",
   "permissions": [
     "debugger",
     "activeTab",
@@ -16,12 +16,18 @@
     "type": "module"
   },
   "action": {
-    "default_title": "Click to attach debugger"
+    "default_title": "Click to attach debugger",
+    "default_icon": {
+      "16": "icons/icon-gray-16.png",
+      "32": "icons/icon-gray-32.png",
+      "48": "icons/icon-gray-48.png",
+      "128": "icons/icon-gray-128.png"
+    }
   },
   "icons": {
-    "16": "icons/icon-16.png",
-    "32": "icons/icon-32.png",
-    "48": "icons/icon-48.png",
-    "128": "icons/icon-128.png"
+    "16": "icons/icon-gray-16.png",
+    "32": "icons/icon-gray-32.png",
+    "48": "icons/icon-gray-48.png",
+    "128": "icons/icon-gray-128.png"
   }
 }