Examine source code of Digital Firefox 4

{
  "theme": {
    "images": {
      "theme_frame": "DigitalFirefox4_header.jpg"
    },
    "colors": {
      "frame": "#b0b0b0",
      "tab_background_text": "#ffffff"
    }
  },
  "version": "2.0",
  "name": "Digital Firefox 4",
  "manifest_version": 2,
  "description": "Made from showmyart's design\n<a href=\"https://outgoing.prod.mozaws.net/v1/2ab117891988dd482d55cbd2251c59aa020e6b1dd68215a165dd91823046110a/http%3A//creative.mozilla.org/designs/4424\" rel=\"nofollow\">http://creative.mozilla.org/designs/4424</a> which is in the top 5 of the Firefox 4 T-shirt Design Challenge\n<a href=\"https://outgoing.prod.mozaws.net/v1/40a175ce5d5176ace877f45e39d6542d67025da88a4e24c848e929af713d0832/http%3A//creative.mozilla.org/challenges/8\" rel=\"nofollow\">http://creative.mozilla.org/challenges/8</a> \n\nI hereby give full credit to showmyart who is a Creative Collective Member since March 2011."
}