Examine source code of Cheerful Bunny

{
  "name": "Cheerful Bunny",
  "manifest_version": 2,
  "version": "1.0",
  "theme": {
    "images": {
      "theme_frame": "Cheerful Bunny.png"
    },
    "colors": {
      "frame": "rgba(84, 194, 185, 1)",
      "tab_background_text": "rgba(240, 173, 188, 1)",
      "toolbar": "rgba(85, 196, 190, 0)",
      "bookmark_text": "rgba(242, 225, 155, 1)",
      "toolbar_field": "rgba(85, 196, 190, 0)",
      "toolbar_field_text": "rgba(168, 255, 218, 1)",
      "tab_line": "rgba(255, 255, 255, 1)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{e34c46ea-723d-4c36-bcf8-1f439c948481}"
    }
  }
}