Examine source code of Old Map 1

{
  "theme": {
    "images": {
      "theme_frame": "OldWorldMap1.jpg"
    },
    "colors": {
      "frame": "#ffffff",
      "tab_background_text": "#ffffff"
    }
  },
  "version": "2.0",
  "name": "Old Map 1",
  "manifest_version": 2,
  "description": "vintage, world, map, antique, My matching wallpaper can be found at: <a href=\"https://outgoing.prod.mozaws.net/v1/503d9a8cfc6b88f9fc7683e80831fb9468088f4b40b6715eadaf66b715bb418d/http%3A//abstract.desktopnexus.com/wallpaper/609614/\" rel=\"nofollow\">http://abstract.desktopnexus.com/wallpaper/609614/</a>"
}