Examine source code of OptikAugenblick

{
  "theme": {
    "images": {
      "theme_frame": "optik-augenblick11.jpg"
    },
    "colors": {
      "frame": "rgba(229,230,232,1)",
      "tab_background_text": "#11ff00"
    }
  },
  "version": "2.0",
  "name": "OptikAugenblick",
  "manifest_version": 2,
  "description": "Optik Augenblick \n<a href=\"https://outgoing.prod.mozaws.net/v1/cda0eddb6cf427076a0ba38dbfa4d1dc8378775a4fac726f8b771af3f7233ff5/http%3A//www.augenblick-kueps.de\" rel=\"nofollow\">www.augenblick-kueps.de</a>"
}