Examine source code of Winter protagonists

{
  "theme": {
    "images": {
      "theme_frame": "cucopaci.jpg"
    },
    "colors": {
      "frame": "#ffffff",
      "tab_background_text": "#000000"
    }
  },
  "version": "2.0",
  "name": "Winter protagonists",
  "manifest_version": 2,
  "description": "<a href=\"https://outgoing.prod.mozaws.net/v1/dea5bbee6450ed78213819f3dc529d689e229a1860585dae45f20b2947785321/http%3A//abstract.desktopnexus.com/wallpaper/534609/\" rel=\"nofollow\">http://abstract.desktopnexus.com/wallpaper/534609/</a>   pine fir forest snow flakes stars Santa Claus Christmas mountain snow man cheerful funny December sky magic childhood wood house chalet winter hill cold frozen chill optimistic Real.Twilight"
}