How to show street numbers over the colored polygon in google maps?

Question

In my web application we need show colored polygons on google maps tiles. I am adding data as geoJson to Google Map. Sample geoJson looks like below.

  var geoJson = {
  "type": "FeatureCollection",
  "count": 1,
  "features": [
    {
      "id": 4813444,
      "type": "Feature",
      "geometry": {
        "type": "MultiPolygon",
        "coordinates": [
          [
            [
              [
                174.7195396833,
                -36.8564663333
              ],
              [
                174.7196494333,
                -36.8563847667
              ],
              [
                174.7196634333,
                -36.85637435
              ],
              [
                174.7196478167,
                -36.8563614167
              ],
              [
                174.7193567667,
                -36.8561201667
              ],
              [
                174.7192242167,
                -36.8562234167
              ],
              [
                174.7195123,
                -36.8564622333
              ],
              [
                174.7195278333,
                -36.8564751167
              ],
              [
                174.7195396833,
                -36.8564663333
              ]
            ]
          ]
        ]
      },
      "properties": {
        "color": "#232121"
      }
    }
  ]
}

Adding Json to Google map as below.

map.data.addGeoJson(geoJson);

Used below code to set styles on colored polygons.

  map.data.setStyle(function(feature) {
    var color = feature.getProperty('color');
    return({
      fillColor: color,
      strokeWeight: 0
    });
  });

My Problem is,

Here colored tile number is not clear because of the color. Can Show it like below image.

Use this fiddle to give me a solution.

Need to tile looks like below.

Any help or tip to proceed highly appreciated.

Answer 1

After struggling few day I could find a solution.

I am posting as this will be helpful to someone who struggling on this.

My approach,

• Create new OverlayView on Map.
• Create StyledMapType for labels.
• Set above OverlayView to existing map.
• Set zIndex style for fifth firstChild.

Below is working code.

  var overlay = new google.maps.OverlayView();
  var labelsMapType = new google.maps.StyledMapType([
    {elementType: 'labels.text.fill', stylers: [{color: '#777777'}]},
    {elementType: 'labels.text.stroke', stylers: [{color: '#f5f1e6'}]},
    {
      stylers: [{
        visibility: 'off',
        color: '#17263c',
        strokeWeight: 2
      }]
    },

    {
      elementType: 'labels',
      stylers: [{
        visibility: 'on',
        color: '#17263c',
        strokeWeight: 2
      }]
    }
  ], {
    name: 'Labels'
  });    
  map.overlayMapTypes.push(labelsMapType);  
  overlay.setMap(map)
  setTimeout(function(){
   document.getElementById('map_canvas').firstChild.firstChild.firstChild.firstChild.firstChild.style.zIndex = 102;
}, 2000);

Working Fiddle.

Hope this will help someone.