Examine source code of HackerzJar

{
  "theme": {
    "images": {
      "theme_frame": "head.png"
    },
    "colors": {
      "frame": "#211f1f",
      "tab_background_text": "#ffffff"
    }
  },
  "version": "2.0",
  "name": "HackerzJar",
  "manifest_version": 2,
  "description": "Persona by <a href=\"https://outgoing.prod.mozaws.net/v1/428165bb23fba5597ed0574810d6eb313f24653900a3f106293fad94060b9a97/http%3A//HackerzJar.com\" rel=\"nofollow\">HackerzJar.com</a> Team"
}