Examine source code of ManiaMix

{
  "theme": {
    "images": {
      "theme_frame": "radio1.jpg"
    },
    "colors": {
      "frame": "#000000",
      "tab_background_text": "#ffffff"
    }
  },
  "version": "2.0",
  "name": "ManiaMix",
  "manifest_version": 2,
  "description": "<a href=\"https://outgoing.prod.mozaws.net/v1/d56cdd95c2e1b6feeae1c2d01ba394834b23a0f9007ac3417be1f0827c6dad3f/http%3A//maniamix.webs.com\" rel=\"nofollow\">maniamix.webs.com</a>"
}