Examine source code of Bird Song

{
  "theme": {
    "images": {
      "theme_frame": "BirdSongH.jpg"
    },
    "colors": {
      "frame": "#0066cc",
      "tab_background_text": "#ffffff"
    }
  },
  "version": "2.0",
  "name": "Bird  Song",
  "manifest_version": 2,
  "description": "abstract, birds, Bokeh, music, musical, piano keys, singing, sky, song, spring, summer, warm, whimsical, \n\nDesigned by MaDonna\n\nMy wallpaper to match is at: <a href=\"https://outgoing.prod.mozaws.net/v1/1dcde63dae9fa5e71e077b787fbbef45605e45d2e6130419cf6c657c54ef7588/http%3A//abstract.desktopnexus.com/wallpaper/1078852/\" rel=\"nofollow\">http://abstract.desktopnexus.com/wallpaper/1078852/</a>"
}