Examine source code of Deadpool Cool

{
  "name": "Deadpool Cool",
  "manifest_version": 2,
  "version": "1.0",
  "theme": {
    "images": {
      "theme_frame": "Deadpool Wallpaper 3.jpg"
    },
    "colors": {
      "frame": "rgba(204, 25, 25, 1)",
      "tab_background_text": "rgba(0, 0, 0, 1)",
      "toolbar": "rgba(18, 18, 18, 0)",
      "bookmark_text": "rgba(0, 0, 0, 1)",
      "toolbar_field": "rgba(191, 27, 27, 1)",
      "toolbar_field_text": "rgba(0, 0, 0, 1)",
      "tab_line": "rgba(0, 0, 0, 1)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{82a003a2-cfb7-4ae3-8690-19c6ad2cc9ce}"
    }
  }
}