Examine source code of ColorFox

{
  "name": "RainbowFox",
  "manifest_version": 2,
  "version": "1.0",
  "theme": {
    "images": {
      "theme_frame": "w10hb.JPG"
    },
    "colors": {
      "frame": "rgba(229, 230, 232, 1)",
      "tab_background_text": "rgba(245, 19, 19, 1)",
      "toolbar": "rgba(247, 242, 247, 1)",
      "bookmark_text": "rgba(9, 13, 235, 1)",
      "toolbar_field": "rgba(250, 247, 247, 1)",
      "tab_line": "rgba(42, 230, 5, 1)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{754c80a6-beeb-4608-bba3-b57286343bb0}"
    }
  }
}