Examine source code of Holiday II

{
  "theme": {
    "images": {
      "theme_frame": "H.jpg"
    },
    "colors": {
      "frame": "#990033",
      "tab_background_text": "#ffffff"
    }
  },
  "version": "2.0",
  "name": "Holiday II",
  "manifest_version": 2,
  "description": "balls, Christmas, decorations, fir, red, snow, snowflakes, spruce, winter, snowing, stars, My wallpaper to match is at: <a href=\"https://outgoing.prod.mozaws.net/v1/5a9667ef669daa84761232bf3278de9070813b6c4cfce4ebf6ebda628c6fbe24/http%3A//nature.desktopnexus.com/wallpaper/903938/\" rel=\"nofollow\">http://nature.desktopnexus.com/wallpaper/903938/</a>"
}