Examine source code of Graffiti Firefox

{
  "theme": {
    "images": {
      "theme_frame": "Persona_Header_TEMPLATE2.jpg"
    },
    "colors": {
      "frame": "#696565",
      "tab_background_text": "#ffffff"
    }
  },
  "version": "2.0",
  "name": "Graffiti Firefox",
  "manifest_version": 2,
  "description": "This graffiti Firefox persona makes the Firefox browser more elegant with a mix of street style graffiti. "
}