Examine source code of Grigiorossa Firefox 0.1

{
  "theme": {
    "images": {
      "theme_frame": "grigiorossa-header.jpg"
    },
    "colors": {
      "frame": "#b00000",
      "tab_background_text": "#606060"
    }
  },
  "version": "2.0",
  "name": "Grigiorossa Firefox 0.1",
  "manifest_version": 2,
  "description": "A Firefox persona to use with Grigiorossa-Gnome"
}