Examine source code of My Backyard Trees

{
  "theme": {
    "images": {
      "theme_frame": "header.png"
    },
    "colors": {
      "frame": "#101d13",
      "tab_background_text": "#ffffff"
    }
  },
  "version": "2.0",
  "name": "My Backyard Trees",
  "manifest_version": 2,
  "description": "Photo I took of trees in my backyard, flowering, flowers, butterflies, spring,\n\nDesigned by MaDonna\n\nMy wallpaper to match is at: <a rel=\"nofollow\" href=\"https://outgoing.prod.mozaws.net/v1/805950286224824efa1f7ae7673a9e5cb197d88c25b8daea87050f8f34cff0c2/http%3A//nature.desktopnexus.com/wallpaper/1494600/\">http://nature.desktopnexus.com/wallpaper/1494600/</a>"
}