Examine source code of Set It Off HK

{
  "theme": {
    "images": {
      "theme_frame": "FirefoxPersonaSIO.2.jpg"
    },
    "colors": {
      "frame": "#000000",
      "tab_background_text": "#ffffff"
    }
  },
  "version": "2.0",
  "name": "Set It Off HK",
  "manifest_version": 2,
  "description": "Set It Off is an amazing band and Horrible Kids is their latest EP. When they (hopefully summer 2012) release their first full length album I'll probably make a thing for that one as well ^_^"
}