Examine source code of BackTrackLinux

{
  "theme": {
    "images": {
      "theme_frame": "BackTrack.jpg"
    },
    "colors": {
      "frame": "#ffffff",
      "tab_background_text": "#ffffff"
    }
  },
  "version": "2.0",
  "name": "BackTrackLinux",
  "manifest_version": 2,
  "description": "This is a Persona, wich show you the \"Backtrack\" logo. Back track is a Linux Live System.\nI hope you'll like it."
}