Examine source code of December Sunset

{
  "theme": {
    "images": {
      "theme_frame": "DecemberSunsetH.jpg"
    },
    "colors": {
      "frame": "#ffffff",
      "tab_background_text": "#ffffff"
    }
  },
  "version": "2.0",
  "name": "December Sunset",
  "manifest_version": 2,
  "description": "photo I took last night of the sunset with Lummi Island in the background.  sky, pink, country, trees, cold, horizon,  I have the desktop wallpaper to match at: \n<a href=\"https://outgoing.prod.mozaws.net/v1/86bcddf5610dfb145f682f2bdfe82dbc20d53c02f098d568f47595db9e494601/http%3A//nature.desktopnexus.com/wallpaper/526321/\" rel=\"nofollow\">http://nature.desktopnexus.com/wallpaper/526321/</a>"
}