Examine source code of BBC Quite Interesting

{
  "theme": {
    "images": {
      "theme_frame": "firefoxqitop.jpg"
    },
    "colors": {
      "frame": "#a39db0",
      "tab_background_text": "#ffffff"
    }
  },
  "version": "2.0",
  "name": "BBC Quite Interesting",
  "manifest_version": 2,
  "description": "The BBC's fantastic panel show QI (Quite Interesting) featuring Stephen Fry and Alan Davies."
}