Examine source code of Fall Hetalia

{
  "theme": {
    "images": {
      "theme_frame": "Tiny.jpg"
    },
    "colors": {
      "frame": "#e8754f",
      "tab_background_text": "#000"
    }
  },
  "version": "2.0",
  "name": "Fall Hetalia",
  "manifest_version": 2,
  "description": "<a href=\"https://outgoing.prod.mozaws.net/v1/8fa3ff94ce5f09a11f14da54be237c49366c266bfb1d373e9272375f79a5b1d3/http%3A//www.pixiv.net/member_illust.php%3Fmode=medium&amp;illust_id=7410574\" rel=\"nofollow\">http://www.pixiv.net/member_illust.php?mode=medium&amp;illust_id=7410574</a>\n\nProps to this adorable art. &lt;3"
}