Examine source code of WarRockMasters.NL

{
  "theme": {
    "images": {
      "theme_frame": "persona-up.jpg"
    },
    "colors": {
      "frame": "rgba(229,230,232,1)",
      "tab_background_text": "#000"
    }
  },
  "version": "2.0",
  "name": "WarRockMasters.NL",
  "manifest_version": 2,
  "description": "<a href=\"https://outgoing.prod.mozaws.net/v1/39239f65997f975ef9d35f449a0d3ba298af49978e899e30de50bd17585c5c74/http%3A//warrockmasters.nl\" rel=\"nofollow\">warrockmasters.nl</a>"
}