Examine source code of Open Season

{
  "theme": {
    "images": {
      "theme_frame": "OpenSeasonHeader.jpg"
    },
    "colors": {
      "frame": "rgba(229,230,232,1)",
      "tab_background_text": "#000"
    }
  },
  "version": "2.0",
  "name": "Open Season",
  "manifest_version": 2,
  "description": "The best Ska, Rocksteady and Reggae band in the whole wide world.\n<a href=\"https://outgoing.prod.mozaws.net/v1/f4c49352080575b952a3cc134bf6384fbe7df1182eabfe01f67e99954dd8ff2c/http%3A//www.openseason.ch\" rel=\"nofollow\">http://www.openseason.ch</a>"
}