Examine source code of First Fall Frost

{
  "theme": {
    "images": {
      "theme_frame": "FirstFrostofFallHCustom.jpg"
    },
    "colors": {
      "frame": "#a3a0a0",
      "tab_background_text": "#ffffff"
    }
  },
  "version": "2.0",
  "name": "First Fall Frost",
  "manifest_version": 2,
  "description": "acorns, barn, butterfly, cold, winter, autumn,  dried leaves, Firefox Persona, leaves, outside, squirrel, window, icicles, blue rose, pine cones,\n\nDesigned by MaDonna\n\nMy wallpaper to match is at: <a href=\"https://outgoing.prod.mozaws.net/v1/36909f06516fdd10eb95ebb526803dd81e92830e9e902d3a5cd7226668482653/http%3A//animals.desktopnexus.com/wallpaper/883665/\" rel=\"nofollow\">http://animals.desktopnexus.com/wallpaper/883665/</a>"
}