Examine source code of Birds Watch by MaDonna

{
  "theme": {
    "images": {
      "theme_frame": "BirdWatchH2Custom.jpg"
    },
    "colors": {
      "frame": "#c8dbc7",
      "tab_background_text": "#000000"
    }
  },
  "version": "2.0",
  "name": "Birds Watch by MaDonna",
  "manifest_version": 2,
  "description": "My desktop wallpaper to match can be found at: <a rel=\"nofollow\" href=\"https://outgoing.prod.mozaws.net/v1/b955ad43b61d79aa741ef0cb10a4ad21a5399f7afed692e3866f0c65843b745c/http%3A//nature.desktopnexus.com/wallpaper/618951/\">http://nature.desktopnexus.com/wallpaper/618951/</a>"
}