Examine source code of Purgatory - Animated

{
  "name": "Purgatory - Animated",
  "manifest_version": 2,
  "version": "4.0",
  "theme": {
    "images": {
      "theme_frame": "hellgate-100ms-v2.png"
    },
    "colors": {
      "frame": "rgba(229, 230, 232, 1)",
      "tab_background_text": "rgba(120, 0, 0, 1)",
      "toolbar": "rgba(252, 157, 62, 0.38)",
      "bookmark_text": "rgba(0, 0, 0, 1)",
      "toolbar_field": "rgba(250, 93, 45, 0.23)",
      "toolbar_field_text": "rgba(3, 3, 3, 1)",
      "tab_line": "rgba(255, 17, 0, 0.32)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{c38c0275-ae0d-4b15-b963-36814fef41c7}"
    }
  }
}