Examine source code of Fischfreunde

{
  "theme": {
    "images": {
      "theme_frame": "firefoxheader.jpg"
    },
    "colors": {
      "frame": "#000000",
      "tab_background_text": "#000000"
    }
  },
  "version": "2.0",
  "name": "Fischfreunde",
  "manifest_version": 2,
  "description": "Personas des <a href=\"https://outgoing.prod.mozaws.net/v1/6f46acaa7b9210cb2018d9722a102e2787d4e3608d7a2df3a0db550039721faf/http%3A//Fischfreunde.at\" rel=\"nofollow\">Fischfreunde.at</a> Forums."
}