Examine source code of Sun Shines Bright

{
  "theme": {
    "images": {
      "theme_frame": "SunShinesBrightH1.jpg"
    },
    "colors": {
      "frame": "#73b82a",
      "tab_background_text": "#ffffff"
    }
  },
  "version": "2.0",
  "name": "Sun Shines Bright",
  "manifest_version": 2,
  "description": "Designed by MaDonna\n\nMy wallpaper to match can be found at: <a rel=\"nofollow\" href=\"https://outgoing.prod.mozaws.net/v1/3182b30148e20dcff0113d52b822b8d98e283ce86695aeddc0f4fa95e5891287/http%3A//nature.desktopnexus.com/wallpaper/701030/\">http://nature.desktopnexus.com/wallpaper/701030/</a>"
}