Examine source code of Whispers Radio

{
  "theme": {
    "images": {
      "theme_frame": "whispers_header.jpg"
    },
    "colors": {
      "frame": "#cc0000",
      "tab_background_text": "#ffffff"
    }
  },
  "version": "2.0",
  "name": "Whispers Radio",
  "manifest_version": 2,
  "description": "Show your support for the radio show and podcast Whispers Radio, found at <a href=\"https://outgoing.prod.mozaws.net/v1/9d24fe600568973ba144dc863f4ae920d06d2983bf239189d9f0c5a2b36febdd/http%3A//whispersradio.com\" rel=\"nofollow\">whispersradio.com</a>!"
}