Examine source code of GTPlanet

{
  "theme": {
    "images": {
      "theme_frame": "Header.jpg"
    },
    "colors": {
      "frame": "#737373",
      "tab_background_text": "#ffffff"
    }
  },
  "version": "2.0",
  "name": "GTPlanet",
  "manifest_version": 2,
  "description": "Theme created by cbabb Design. \nVisit <a href=\"https://outgoing.prod.mozaws.net/v1/ec42fdb110fd448dabe031f14c22a74ad930d1322ae055027686ec8922311f09/http%3A//GTPlanet.com\" rel=\"nofollow\">GTPlanet.com</a>!"
}