Examine source code of Cropmarks Studio II

{
  "theme": {
    "images": {
      "theme_frame": "firefox-05.jpg"
    },
    "colors": {
      "frame": "#ffffff",
      "tab_background_text": "#ffffff"
    }
  },
  "version": "2.0",
  "name": "Cropmarks Studio II",
  "manifest_version": 2,
  "description": "<a href=\"https://outgoing.prod.mozaws.net/v1/955cf33c99ca167673d33b22336a3d43c53e78bc728b59f981b54eb51435953f/http%3A//www.cropmarkstduio.com\" rel=\"nofollow\">www.cropmarkstduio.com</a>"
}