Examine source code of extreme firefox silver

{
  "theme": {
    "images": {
      "theme_frame": "testingnewfox.JPG"
    },
    "colors": {
      "frame": "#878484",
      "tab_background_text": "#a3a0a0"
    }
  },
  "version": "2.0",
  "name": "extreme firefox silver",
  "manifest_version": 2,
  "description": "extreme firefox silver design with new cool blue fox logo !"
}