Examine source code of Promises.

{
  "theme": {
    "images": {
      "theme_frame": "PromisesH.jpg"
    },
    "colors": {
      "frame": "#f7f5fe",
      "tab_background_text": "#000000"
    }
  },
  "version": "2.0",
  "name": "Promises.",
  "manifest_version": 2,
  "description": "abstract, crocus, flowers, newspaper, light, print, petals, spring, stems, summer \n\nDesigned by MaDonna\n\nMy wallpaper to match is at: <a href=\"https://outgoing.prod.mozaws.net/v1/8e1c3c48678b94b49dd05af062585d3a21847c7af636685f86cdf5bb1ce88618/http%3A//nature.desktopnexus.com/wallpaper/1052447/\" rel=\"nofollow\">http://nature.desktopnexus.com/wallpaper/1052447/</a>"
}