Examine source code of Talkberlin

{
  "theme": {
    "images": {
      "theme_frame": "header_tb.png"
    },
    "colors": {
      "frame": "#ffffff",
      "tab_background_text": "#73ab20"
    }
  },
  "version": "2.0",
  "name": "Talkberlin",
  "manifest_version": 2,
  "description": "<a href=\"https://outgoing.prod.mozaws.net/v1/39173ece2e7540a25f82045ed36d95450d4106ed852f6416327fcbd2df6b1012/http%3A//Talkberlin.de\" rel=\"nofollow\">Talkberlin.de</a>"
}