title: google map api v3 background color
body: <p>I have placed a custom map png on google map.  I have removed everything from google maps to only display my custom map.  The background color is a light blue and I want to change it to white. Here is the code:</p>
  
  <pre><code>function initialize() {
  
    var myLatLng = new google.maps.LatLng(39, -98.5);
    var myOptions = {
      maxZoom: 4,
      minZoom: 4,
      zoom: 4,
  
      panControl: false,
      draggable: false,
          center: myLatLng,
      disableDefaultUI: true,
          mapTypeId: google.maps.MapTypeId.ROADMAP,
      backgroundColor: '#FFFFFF'
    };
  
    var map = new google.maps.Map(document.getElementById("map_canvas"), myOptions);
    var mapStyles = [
    {
      featureType: "all",
      stylers: [
        { visibility: "off" }]
      }];
  
  map.setOptions({styles: mapStyles});
  }
  </code></pre>
  
  <p>It only flashes white then changes to a light blue.  How do I set it to white or transparent?</p>