Examine source code of Cold Memories

{
  "theme": {
    "images": {
      "theme_frame": "header.png"
    },
    "colors": {
      "frame": "#ffffff",
      "tab_background_text": "#000000"
    }
  },
  "version": "2.0",
  "name": "Cold Memories",
  "manifest_version": 2,
  "description": "Credit to :\n<a rel=\"nofollow\" href=\"https://outgoing.prod.mozaws.net/v1/e00a4d85b0caa60d3ad32bacda101d7a8eb652d7029e267be1b9cac4ae8e491c/http%3A//midnighttokerkate.deviantart.com/art/Winter-Cravings-261216568\">http://midnighttokerkate.deviantart.com/art/Winter-Cravings-261216568</a>"
}