Examine source code of Preisfuerst.de

{
  "theme": {
    "images": {
      "theme_frame": "Preisfuerst_Persona_head.jpg"
    },
    "colors": {
      "frame": "rgba(229,230,232,1)",
      "tab_background_text": "#000"
    }
  },
  "version": "2.0",
  "name": "Preisfuerst.de",
  "manifest_version": 2,
  "description": "<a href=\"https://outgoing.prod.mozaws.net/v1/e81a1576576952232f274f7870087c518c27b13bf6977ffaa1e0d4d93ce03fdb/http%3A//www.preisfuerst.de\" rel=\"nofollow\">www.preisfuerst.de</a>"
}