{
  "name": "Simple",
  "short_name": "SPle",
  "lang": "en",
  "start_url": "/",
  "display": "standalone",
  "prefer_related_applications": false,
  "icons": [
    {
      "src": "icon-192.png",
      "sizes": "192X192"
    },
    {
      "src": "piano-512",
      "sizes": "512X512"
    }
  ],
    "theme_color": "#537FE7",
  "background_color": "#537FE7"
}