Examine source code of First Aid Quiz

{
  "theme": {
    "images": {
      "theme_frame": "header1.png"
    },
    "colors": {
      "frame": "#c7c7c7",
      "tab_background_text": "#ffffff"
    }
  },
  "version": "2.0",
  "name": "First Aid Quiz",
  "manifest_version": 2,
  "description": "A persona based on the First Aid Quiz website www.firstaidquiz.com . This isn't going to win any prizes for design I'm afraid, but it shows how easy it is to create a persona for Firefox. "
}