Examine source code of FireFox Rox

{
  "theme": {
    "images": {
      "theme_frame": "FireFoxRoxtop.png"
    },
    "colors": {
      "frame": "#00a611",
      "tab_background_text": "#00a611"
    }
  },
  "version": "2.0",
  "name": "FireFox Rox",
  "manifest_version": 2,
  "description": "FireRox is a fun little theme.\n\nI hope you enjoy my hard work!\n\nIt includes a checker board on the left and a Slogan that easily states that FireFox Rocks!\nAct now and get a free Cheap-looking fire design on the bottom. YOU MUST HURRY though because it will only be there for forever.\n\nHaha. Enjoy FireRox!"
}