Data Layer: Styling

View this example full screen.

JavaScript

var map;
function initialize() {
  map = new google.maps.Map(document.getElementById('map-canvas'), {
    zoom: 4,
    center: {lat: -28, lng: 137.883}
  });

  // Load GeoJSON.
  map.data.loadGeoJson('https://storage.googleapis.com/maps-devrel/google.json');

  // Set the stroke width, and fill color for each polygon
  var featureStyle = {
    fillColor: 'green',
    strokeWeight: 1
  }
  map.data.setStyle(featureStyle);
}

google.maps.event.addDomListener(window, 'load', initialize);

JavaScript + HTML

<!DOCTYPE html>
<html>
  <head>
    <title>Data Layer: Styling</title>
    <meta name="viewport" content="initial-scale=1.0, user-scalable=no">
    <meta charset="utf-8">
    <style>
      html, body, #map-canvas {
        height: 100%;
        margin: 0px;
        padding: 0px
      }
    </style>
    <script src="https://maps.googleapis.com/maps/api/js?v=3.exp&signed_in=true"></script>
    <script>
var map;
function initialize() {
  map = new google.maps.Map(document.getElementById('map-canvas'), {
    zoom: 4,
    center: {lat: -28, lng: 137.883}
  });

  // [START snippet-load]
  // Load GeoJSON.
  map.data.loadGeoJson('https://storage.googleapis.com/maps-devrel/google.json');
  // [END snippet-load]

  // [START snippet-style]
  // Set the stroke width, and fill color for each polygon
  var featureStyle = {
    fillColor: 'green',
    strokeWeight: 1
  }
  map.data.setStyle(featureStyle);
  // [END snippet-style]
}

google.maps.event.addDomListener(window, 'load', initialize);

    </script>
  </head>
  <body>
    <div id="map-canvas"></div>
  </body>
</html>