Examine source code of Fivemag.de

{
  "theme": {
    "images": {
      "theme_frame": "persona9.jpg"
    },
    "colors": {
      "frame": "rgba(229,230,232,1)",
      "tab_background_text": "#000000"
    }
  },
  "version": "2.0",
  "name": "Fivemag.de",
  "manifest_version": 2,
  "description": "visit <a href=\"https://outgoing.prod.mozaws.net/v1/347fd8da3a700819c1a458a9cd63399cfbdb9888e70204dec628b2b961a62592/http%3A//fivemag.de\" rel=\"nofollow\">fivemag.de</a>"
}