Examine source code of Fast Biker

{
  "name": "Fast Biker",
  "manifest_version": 2,
  "version": "1.0",
  "theme": {
    "images": {
      "theme_frame": "Fast Biker.jpg"
    },
    "colors": {
      "frame": "rgba(229, 230, 232, 1)",
      "tab_background_text": "rgba(232, 96, 200, 1)",
      "toolbar": "rgba(0, 0, 0, 0)",
      "toolbar_field": "rgba(3, 3, 3, 0)",
      "toolbar_field_text": "rgba(60, 201, 217, 1)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{265a3351-4299-490e-a143-469f4c28aa76}"
    }
  }
}