Examine source code of Gackpoid

{
  "theme": {
    "images": {
      "theme_frame": "gackpoid.jpg"
    },
    "colors": {
      "frame": "rgba(229,230,232,1)",
      "tab_background_text": "#330033"
    }
  },
  "version": "2.0",
  "name": "Gackpoid",
  "manifest_version": 2,
  "description": "Image from Pixiv: <a href=\"https://outgoing.prod.mozaws.net/v1/a83b864e465f282d2c0ebd384ced78a3fbfd6e233d604c3571bcc9ee57a1f936/http%3A//www.pixiv.net/member_illust.php%3Fmode=medium&amp;illust_id=12255983\" rel=\"nofollow\">http://www.pixiv.net/member_illust.php?mode=medium&amp;illust_id=12255983</a>"
}