Examine source code of Lurker

{
  "theme": {
    "images": {
      "theme_frame": "LurkerHeader.apng"
    },
    "colors": {
      "frame": "#660000",
      "tab_background_text": "#ffffff"
    }
  },
  "version": "2.0",
  "name": "Lurker",
  "manifest_version": 2,
  "description": "Many believe that their computer is powered by electrons flowing through silicon chips. This is a myth.  Deep inside your machine lurks an ominous daemon grudgingly doing you bidding. This Persona opens a window into the forbidding lair of the daemon.  Watch closely and you may see it sullenly looking back at you."
}