Examine source code of Dieselfrog.com

{
  "theme": {
    "images": {
      "theme_frame": "Persona_header_3.jpg"
    },
    "colors": {
      "frame": "#42d435",
      "tab_background_text": "#000708"
    }
  },
  "version": "2.0",
  "name": "Dieselfrog.com",
  "manifest_version": 2,
  "description": "<a href=\"https://outgoing.prod.mozaws.net/v1/4a47779b0fe42f830fa32e4174f2065a826d8ce509c82d5a836cc83fb960a3c1/http%3A//Dieselfrog.com\" rel=\"nofollow\">Dieselfrog.com</a> Header"
}