Examine source code of www.avcesar.com

{
  "theme": {
    "images": {
      "theme_frame": "headerb.png"
    },
    "colors": {
      "frame": "#a8a8a8",
      "tab_background_text": "#000000"
    }
  },
  "version": "2.0",
  "name": "www.avcesar.com",
  "manifest_version": 2,
  "description": "<a href=\"https://outgoing.prod.mozaws.net/v1/a59f1854cc82313e59b32ca5ee9c13f1d5a66b922ce2761b7bbb66fc043eb3d9/http%3A//www.avcesar.com\" rel=\"nofollow\">http://www.avcesar.com</a>"
}