Examine source code of City Speed

{
  "theme": {
    "images": {
      "theme_frame": "cityspeedH.jpg"
    },
    "colors": {
      "frame": "#011663",
      "tab_background_text": "#a8bbf0"
    }
  },
  "version": "2.0",
  "name": "City Speed",
  "manifest_version": 2,
  "description": "blue, city, speed, night, skyscrapers, movement, lights, uptown, bright, architecture, shine\t, hurry, rush hour, \n\nDesigned by MaDonna\n\nMy wallpaper to match is at: <a href=\"https://outgoing.prod.mozaws.net/v1/94686aa81f7eeff4455ee21e6702ffe4de2d2e17f1c971ef6e8c48d172cf6bd4/http%3A//abstract.desktopnexus.com/wallpaper/1288909/\" rel=\"nofollow\">http://abstract.desktopnexus.com/wallpaper/1288909/</a>"
}