Examine source code of Superb Internet Dark

{
  "theme": {
    "images": {
      "theme_frame": "FirefoxPersonaHeaderDK.jpg"
    },
    "colors": {
      "frame": "#c7c7c7",
      "tab_background_text": "#bfbdbd"
    }
  },
  "version": "2.0",
  "name": "Superb Internet Dark",
  "manifest_version": 2,
  "description": "Superb Internet provides dedicated servers, managed hosting, shared hosting, domain registration and colocation services. Check out <a href=\"https://outgoing.prod.mozaws.net/v1/5030c8f6c122923f9fb226819d49e8a810bf2fc64654255d96c40da4f1739f47/http%3A//Superb.net\" rel=\"nofollow\">Superb.net</a>!"
}