Examine source code of Silentbike.com

{
  "theme": {
    "images": {
      "theme_frame": "silentbike_header.jpg"
    },
    "colors": {
      "frame": "rgba(229,230,232,1)",
      "tab_background_text": "#030303"
    }
  },
  "version": "2.0",
  "name": "Silentbike.com",
  "manifest_version": 2,
  "description": "<a href=\"https://outgoing.prod.mozaws.net/v1/71b22d4d1f3859094f04603b48b33e616ac65cb4480e7bcec32fa11eceec247a/http%3A//Silentbike.com\" rel=\"nofollow\">Silentbike.com</a> ist unsere kleine Mountainbike-Homepage"
}