Examine source code of VIP-Booking.com

{
  "theme": {
    "images": {
      "theme_frame": "firefox_persona2.jpg"
    },
    "colors": {
      "frame": "#d9c5c5",
      "tab_background_text": "#d9bfbf"
    }
  },
  "version": "2.0",
  "name": "VIP-Booking.com",
  "manifest_version": 2,
  "description": "<a href=\"https://outgoing.prod.mozaws.net/v1/32472a5a51f8fa54428d18e21ac48e6ce94c5b673e552be1863e4bbbc34f84d5/http%3A//VIP-Booking.com\" rel=\"nofollow\">VIP-Booking.com</a>"
}