Examine source code of kalaydo.de

{
  "theme": {
    "images": {
      "theme_frame": "Kalaydo_Persona_head.jpg"
    },
    "colors": {
      "frame": "rgba(229,230,232,1)",
      "tab_background_text": "#000"
    }
  },
  "version": "2.0",
  "name": "kalaydo.de",
  "manifest_version": 2,
  "description": "<a href=\"https://outgoing.prod.mozaws.net/v1/81b3d023221d06a22826ae870b81d5f3bd9546eb05718d88cf5cf9411ba9c066/http%3A//www.kalaydo.de\" rel=\"nofollow\">www.kalaydo.de</a>"
}