Examine source code of Ok9

{
  "name": "Yellow gray",
  "manifest_version": 2,
  "version": "1.0",
  "theme": {
    "images": {
      "theme_frame": "Yellow-and-gray-wallpaper.jpg"
    },
    "colors": {
      "frame": "rgba(255, 204, 18, 1)",
      "tab_background_text": "rgba(122, 121, 121, 1)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{3ecb8786-211c-4676-81fc-776beb960712}"
    }
  }
}