Examine source code of XtremeRoot

{
  "theme": {
    "images": {
      "theme_frame": "header.jpg"
    },
    "colors": {
      "frame": "#000000",
      "tab_background_text": "#f21800"
    }
  },
  "version": "2.0",
  "name": "XtremeRoot",
  "manifest_version": 2,
  "description": "The official persona of <a href=\"https://outgoing.prod.mozaws.net/v1/340eb45a2e8b864ee462ecacab5394681a99dc5cea39ebc140378c13a3c9a283/http%3A//XtremeRoot.net\" rel=\"nofollow\">XtremeRoot.net</a>.\nCredits to Yankee, Casi and NoX and ska_jov for the idea"
}