Examine source code of Summer Six

{
  "theme": {
    "images": {
      "theme_frame": "H.jpg"
    },
    "colors": {
      "frame": "#ffffff",
      "tab_background_text": "#000000"
    }
  },
  "version": "2.0",
  "name": "Summer Six",
  "manifest_version": 2,
  "description": "Designed by MaDonna\n\n My matching desktop wallpaper can be found at: <a rel=\"nofollow\" href=\"https://outgoing.prod.mozaws.net/v1/d8b17b487968cf4f28f8023976191eb57909361d8fa10bb72837813fca922c3f/http%3A//nature.desktopnexus.com/wallpaper/612297/\">http://nature.desktopnexus.com/wallpaper/612297/</a>"
}