Examine source code of IT Professional

{
  "theme": {
    "images": {
      "theme_frame": "head.jpg"
    },
    "colors": {
      "frame": "#969696",
      "tab_background_text": "#000000"
    }
  },
  "version": "2.0",
  "name": "IT Professional",
  "manifest_version": 2,
  "description": "<a href=\"https://outgoing.prod.mozaws.net/v1/7d019c34050f941de7836770e3f6d8aaae0c4818e662f4e18f77130073858b72/http%3A//www.itprofessional-ada.com\" rel=\"nofollow\">http://www.itprofessional-ada.com</a>"
}