Examine source code of Kasted

{
  "theme": {
    "images": {
      "theme_frame": "kasted_persona.jpg"
    },
    "colors": {
      "frame": "#bababa",
      "tab_background_text": "#1c1870"
    }
  },
  "version": "2.0",
  "name": "Kasted",
  "manifest_version": 2,
  "description": "Kasted Theme.  <a href=\"https://outgoing.prod.mozaws.net/v1/6af128080bb5bc996b070c29576641193f9b6d69d1c914e079d5ffaaa3d315dd/http%3A//www.getkasted.com\" rel=\"nofollow\">www.getkasted.com</a>"
}