Examine source code of In Legend -1-

{
  "theme": {
    "images": {
      "theme_frame": "il-ff-header.jpg"
    },
    "colors": {
      "frame": "#000000",
      "tab_background_text": "#ffffff"
    }
  },
  "version": "2.0",
  "name": "In Legend -1-",
  "manifest_version": 2,
  "description": "In Legend Personas by Schmuddel\n<a href=\"https://outgoing.prod.mozaws.net/v1/86ac222f203652309903e2a203fcffbdc5e4db2de8ef796f461a43f728cfecd8/http%3A//www.inlegend.de\" rel=\"nofollow\">www.inlegend.de</a>\n<a href=\"https://outgoing.prod.mozaws.net/v1/346d948a98a9bf83285b0b03aebda48ee4e084a3168bd1e25c1f043e3af58f41/http%3A//www.laberpla.net\" rel=\"nofollow\">www.laberpla.net</a>"
}