Examine source code of Noo Tab

{
  "manifest_version": 2,
  "name": "Noo Tab",
  "version": "1.0.2",
  "description": "Minimalist new tab page that provides seamless access to search and productivity tools, all with customizable colour themes.",
  "icons": {
    "48": "images/icon-48.png",
    "96": "images/icon-96.png"
  },
  "chrome_url_overrides": {
    "newtab": "nooTabOverride.html"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{e5374fd7-7eb3-45f0-92c0-06c228e9a7ac}"
    }
  }
}