Examine source code of White For Summer

{
  "theme": {
    "images": {
      "theme_frame": "whiteforsummerH.jpg"
    },
    "colors": {
      "frame": "#000000",
      "tab_background_text": "#ffffff"
    }
  },
  "version": "2.0",
  "name": "White For Summer",
  "manifest_version": 2,
  "description": "Designed by MaDonna\n\nMy wallpaper to match is at: <a rel=\"nofollow\" href=\"https://outgoing.prod.mozaws.net/v1/c8779168d7503215a73b06d06eb5cd59f9ba71826cee79962fe9089c67ab1c10/http%3A//nature.desktopnexus.com/wallpaper/1071326/\">http://nature.desktopnexus.com/wallpaper/1071326/</a>"
}