Examine source code of Firefox 8 Persona

{
  "theme": {
    "images": {
      "theme_frame": "Fox8head.jpg"
    },
    "colors": {
      "frame": "#b5b3b3",
      "tab_background_text": "#53b6b8"
    }
  },
  "version": "2.0",
  "name": "Firefox 8 Persona",
  "manifest_version": 2,
  "description": "Firefox 8 persona mostly turquoise gradiented with text."
}