Examine source code of zombie grrrl

{
  "theme": {
    "images": {
      "theme_frame": "zombiegirlheader3.jpg"
    },
    "colors": {
      "frame": "rgba(229,230,232,1)",
      "tab_background_text": "#000"
    }
  },
  "version": "2.0",
  "name": "zombie grrrl",
  "manifest_version": 2,
  "description": "My design is also available on a tshirt at: <a href=\"https://outgoing.prod.mozaws.net/v1/7ee06935c84c963feddc8f24eb8ad5477a49e968fb84d8b707f398f0f83eabf5/http%3A//curua.redbubble.com\" rel=\"nofollow\">http://curua.redbubble.com</a>"
}