chrome/browser/resources/settings/manifest.json

{
  "name": "Settings",
  "display": "standalone",
  "icons": [
    {
      "src": "icon-192.png",
      "sizes": "192x192",
      "type": "image/png"
    }
  ],
  "start_url": "/",
  "theme_color": "#254FAE"
}