Examine source code of Old Map Two

{
  "theme": {
    "images": {
      "theme_frame": "OldMap2.jpg"
    },
    "colors": {
      "frame": "#ffffff",
      "tab_background_text": "#ffffff"
    }
  },
  "version": "2.0",
  "name": "Old Map Two",
  "manifest_version": 2,
  "description": "vintage, map, Europe, Russia, people, antique, My matching desktop wallpaper can be found at: <a href=\"https://outgoing.prod.mozaws.net/v1/c465fbf068e74981f68ef57449398cbd6f778bc01410c8141cfff17ee224a75e/http%3A//abstract.desktopnexus.com/wallpaper/610749/\" rel=\"nofollow\">http://abstract.desktopnexus.com/wallpaper/610749/</a>"
}