Examine source code of Ubuntu Colombia

{
  "theme": {
    "images": {
      "theme_frame": "header.png"
    },
    "colors": {
      "frame": "#ffffff",
      "tab_background_text": "#ffffff"
    }
  },
  "version": "2.0",
  "name": "Ubuntu Colombia",
  "manifest_version": 2,
  "description": "<a href=\"https://outgoing.prod.mozaws.net/v1/b4c496b8a23439b62c8fd237496fb6c5cb926c95ae8c83154d897415bb813d48/http%3A//www.ubuntu-co.com\" rel=\"nofollow\">http://www.ubuntu-co.com</a>"
}