Examine source code of Head Case Radio

{
  "theme": {
    "images": {
      "theme_frame": "hcr-personaheader7.jpg"
    },
    "colors": {
      "frame": "#67c1c1",
      "tab_background_text": "#ffffff"
    }
  },
  "version": "2.0",
  "name": "Head Case Radio",
  "manifest_version": 2,
  "description": "Head Case Radio persona - matches the color scheme of our web site, at <a rel=\"nofollow\" href=\"https://outgoing.prod.mozaws.net/v1/76a34d71b2708907b6e72aaff59c83f978663c3f1479c6e3850d580ed0e0a9cb/http%3A//www.headcaseradio.com\">http://www.headcaseradio.com</a>."
}