Examine source code of Butterfly Clouds

{
  "name": "Butterfly Clouds",
  "manifest_version": 2,
  "version": "3.0",
  "theme": {
    "images": {
      "theme_frame": "ButterflyCloudsH1.jpg"
    },
    "colors": {
      "frame": "rgba(209, 209, 209, 1)",
      "tab_background_text": "rgba(0, 0, 0, 1)",
      "toolbar": "rgba(209, 209, 209, 0)",
      "bookmark_text": "rgba(0, 0, 0, 1)",
      "toolbar_field": "rgba(209, 209, 209, 0.09)",
      "toolbar_field_text": "rgba(3, 3, 3, 1)",
      "tab_line": "rgba(0, 0, 0, 1)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{5abd9a48-ecde-46e9-904c-fa2580868389}"
    }
  }
}