Examine source code of Dark Bing Chat

{
  "name": "Dark Bing Chat",
  "version": "1.0",
  "description": "You can use dark mode of bing chat. 다크모드 빙 챗을 사용할 수 있습니다.",
  "icons": {
    "48": "icon-48.png"
  },
  "permissions": [
    "webNavigation",
    "https://*.bing.com/*"
  ],
  "background": {
    "scripts": [
      "Dark.js"
    ]
  },
  "manifest_version": 2,
  "browser_specific_settings": {
    "gecko": {
      "id": "{9b71a6e7-ecab-4053-878a-a5ac9855747b}"
    }
  }
}