Examine source code of KittyFox

{
  "theme": {
    "images": {
      "theme_frame": "catheader2.jpg"
    },
    "colors": {
      "frame": "#757575",
      "tab_background_text": "#ffffff"
    }
  },
  "version": "2.0",
  "name": "KittyFox",
  "manifest_version": 2,
  "description": "A Firefox persona for cat lovers like me.\nWorks best on Windows Vista / 7 with a max. screen width of 1920 pixels."
}