Examine source code of CZTheme

{
  "theme": {
    "images": {
      "theme_frame": "header.png"
    },
    "colors": {
      "frame": "rgba(229,230,232,1)",
      "tab_background_text": "#000"
    }
  },
  "version": "2.0",
  "name": "CZTheme",
  "manifest_version": 2,
  "description": "Firefox theme for Friendzit. Member of <a rel=\"nofollow\" href=\"https://outgoing.prod.mozaws.net/v1/1c1890b4613e4a8f991ed4909f85ce15934a99483e412f3c8bf1f75194990eca/http%3A//Cafezit.Com\">Cafezit.Com</a>"
}