Examine source code of snowy robins

{
  "theme": {
    "images": {
      "theme_frame": "header.png"
    },
    "colors": {
      "frame": "#ffffff",
      "tab_background_text": "#d6203e"
    }
  },
  "version": "2.0",
  "name": "snowy robins",
  "manifest_version": 2,
  "description": "original picture by cally jane studio - <a rel=\"nofollow\" href=\"https://outgoing.prod.mozaws.net/v1/11c98dbe6ac3fa426bc274c741a9e3b3333ac04176ffd2650095f4c7e41eeaad/http%3A//www.s41.radikal.ru/i094/1101/a8/be5e41d64f79\">www.s41.radikal.ru/i094/1101/a8/be5e41d64f79</a>"
}