Examine source code of Doris Feeling

{
  "theme": {
    "images": {
      "theme_frame": "kopf.png"
    },
    "colors": {
      "frame": "rgba(229,230,232,1)",
      "tab_background_text": "#ffffff"
    }
  },
  "version": "2.0",
  "name": "Doris Feeling",
  "manifest_version": 2,
  "description": "Kommt herein und seit mir dabei, wenn es wieder heisst: Doris Feeling!\n\n<a href=\"https://outgoing.prod.mozaws.net/v1/0f7a830dcb3963fb396cb8d1e03a5cf665d9fe9475dc803e816447bee0e12b2e/http%3A//www.facebook.com/groups/dorisfeeling\" rel=\"nofollow\">www.facebook.com/groups/dorisfeeling</a>"
}