Examine source code of Christmas Ball

{
  "theme": {
    "images": {
      "theme_frame": "ChristmasBallHCustom.jpg"
    },
    "colors": {
      "frame": "#a13511",
      "tab_background_text": "#ffffff"
    }
  },
  "version": "2.0",
  "name": "Christmas Ball",
  "manifest_version": 2,
  "description": "Designed by MaDonna\n\nMy wallpaper to match is at: <a rel=\"nofollow\" href=\"https://outgoing.prod.mozaws.net/v1/27b16d52b8db934133ee1673445a828df930bad3dfb7cfa5058911613e39d52e/http%3A//abstract.desktopnexus.com/wallpaper/875952/\">http://abstract.desktopnexus.com/wallpaper/875952/</a>"
}