message: Change window chrome to black
diff: "type": "image/png"
  }
  ],
  - "theme_color": "#404141",
  - "background_color": "#434444",
  + "theme_color": "black",
  + "background_color": "black",
  "display": "standalone",
  "start_url": "/index.html?utm_source=homescreen"
  }
  