Examine source code of firefox6.0

{
  "theme": {
    "images": {
      "theme_frame": "ffox1.png"
    },
    "colors": {
      "frame": "#0040ff",
      "tab_background_text": "#0040ff"
    }
  },
  "version": "2.0",
  "name": "firefox6.0",
  "manifest_version": 2,
  "description": "firefox6.0"
}