Examine source code of Fall Snowfall

{
  "theme": {
    "images": {
      "theme_frame": "FallSnowfallHCustom.jpg"
    },
    "colors": {
      "frame": "#d6f0c3",
      "tab_background_text": "#000000"
    }
  },
  "version": "2.0",
  "name": "Fall Snowfall",
  "manifest_version": 2,
  "description": "autumn, bird, chickadee, chill, cold, cones, fall, frost, leaves, pine cones, snow, tree, winter\t\n\nDesigned by MaDonna\n\nMy wallpaper to match is at: <a href=\"https://outgoing.prod.mozaws.net/v1/a526b732cbddf5b46cc335e51bcb0d29651b91ae7ac21c3859c264c691633336/http%3A//nature.desktopnexus.com/wallpaper/1177594/\" rel=\"nofollow\">http://nature.desktopnexus.com/wallpaper/1177594/</a>"
}