Examine source code of Hidden Falls

{
  "theme": {
    "images": {
      "theme_frame": "hdfalls.jpg"
    },
    "colors": {
      "frame": "#cccccc",
      "tab_background_text": "#ffffff"
    }
  },
  "version": "2.0",
  "name": "Hidden Falls",
  "manifest_version": 2,
  "description": "Firefox Persona version of my “Hidden Falls” wallpaper. 3D artwork by Ryan Bliss. Persona Designed by Mark Hamilton for Digital Blasphemy. Wallpaper available at <a href=\"https://outgoing.prod.mozaws.net/v1/16ca556bc4069c52fd11db97ae0c7ad45688aafdce58f9b7c53d6c64dcb2fd2f/http%3A//digitalblasphemy.com/preview.shtml%3Fi=hiddenfalls\" rel=\"nofollow\">http://digitalblasphemy.com/preview.shtml?i=hiddenfalls</a>"
}