Examine source code of DracCoach

{
  "theme": {
    "images": {
      "theme_frame": "HeaderDracc1.jpg"
    },
    "colors": {
      "frame": "rgba(229,230,232,1)",
      "tab_background_text": "#000"
    }
  },
  "version": "2.0",
  "name": "DracCoach",
  "manifest_version": 2,
  "description": "Homepage: <a href=\"https://outgoing.prod.mozaws.net/v1/3d46246f1839b49feceba65e44da3a201aa10d0e51661730379b5a0ca94158f8/http%3A//Justtom.de\" rel=\"nofollow\">Justtom.de</a>"
}