Examine source code of Surprising Spring

{
  "theme": {
    "images": {
      "theme_frame": "header.png"
    },
    "colors": {
      "frame": "#d0a4fb",
      "tab_background_text": "#000000"
    }
  },
  "version": "2.0",
  "name": "Surprising Spring",
  "manifest_version": 2,
  "description": "Designed by MaDonna\n\nMy wallpaper to match is at: <a rel=\"nofollow\" href=\"https://outgoing.prod.mozaws.net/v1/5f2076d7f55ae97da62d094e92215ae18ec1958f13ccecd1046825fab5096334/http%3A//nature.desktopnexus.com/wallpaper/1688618/\">http://nature.desktopnexus.com/wallpaper/1688618/</a>"
}