Examine source code of Sunday Sail

{
  "theme": {
    "images": {
      "theme_frame": "SundaySailHCustom.jpg"
    },
    "colors": {
      "frame": "#47decf",
      "tab_background_text": "#000000"
    }
  },
  "version": "2.0",
  "name": "Sunday Sail",
  "manifest_version": 2,
  "description": "ocean, beach, sea, bay, water, sailboats, boats, sailing, birds, seagulls, shrubs, plants, sky, sunshine, sun, clouds, My wallpaper to match can be found at: <a href=\"https://outgoing.prod.mozaws.net/v1/1cdfc496b9f73bfe6cb07ad2479994904c496313e9b8eaccda8494cb29d69dbb/http%3A//nature.desktopnexus.com/wallpaper/704763/\" rel=\"nofollow\">http://nature.desktopnexus.com/wallpaper/704763/</a>"
}