Examine source code of Minecraft Creepers

{
  "theme": {
    "images": {
      "theme_frame": "ffp-mc-bg-1.png"
    },
    "colors": {
      "frame": "#b3b3b3",
      "tab_background_text": "#ffffff"
    }
  },
  "version": "2.0",
  "name": "Minecraft Creepers",
  "manifest_version": 2,
  "description": "The Minecraft Creepers.\n\nEnjoy, this is my first persona!\n\n<a href=\"https://outgoing.prod.mozaws.net/v1/0985cddf19611ce2e26feb7fea3dd0558f4e7c1c55d1158c744f498f069fe6a2/http%3A//www.worldofalex.tumblr.com\" rel=\"nofollow\">http://www.worldofalex.tumblr.com</a>"
}