Examine source code of iPod Nano

{
  "theme": {
    "images": {
      "theme_frame": "FireFoxHeaderPic4.jpg"
    },
    "colors": {
      "frame": "#000000",
      "tab_background_text": "#000000"
    }
  },
  "version": "2.0",
  "name": "iPod Nano",
  "manifest_version": 2,
  "description": "Why wasn't an iPod one already generated? >:[ I mean, seriously. Well. This is the first one, so that automatically makes me cool."
}