Examine source code of mysek.de

{
  "theme": {
    "images": {
      "theme_frame": "header.png"
    },
    "colors": {
      "frame": "#dd602a",
      "tab_background_text": "#ffffff"
    }
  },
  "version": "2.0",
  "name": "mysek.de",
  "manifest_version": 2,
  "description": "<a href=\"https://outgoing.prod.mozaws.net/v1/3d03e210892e561c2b7153b33ff76e9e52258ef16972aab7b8a2aac4fb26f453/http%3A//mysek.de\" rel=\"nofollow\">mysek.de</a> header"
}