Examine source code of winter forest

{
  "theme": {
    "images": {
      "theme_frame": "fin.jpg"
    },
    "colors": {
      "frame": "#1b47b5",
      "tab_background_text": "#ffffff"
    }
  },
  "version": "2.0",
  "name": "winter forest",
  "manifest_version": 2,
  "description": "<a href=\"https://outgoing.prod.mozaws.net/v1/f6293b0f4d1b092b5c3566154ec1f5991f77cb9f1d29e54365fd3af0abd4ad17/http%3A//nature.desktopnexus.com/wallpaper/204609/\" rel=\"nofollow\">http://nature.desktopnexus.com/wallpaper/204609/</a>\nfir snow sky blue white Christmas cloud holiday birds forest mountain"
}