anchor.diff:            { "lightness": 41 }
           ]
         },{
  -        "featureType": "transit.station.airport",
  -        "stylers": [
  -          { "lightness": 49 }
  -        ]
  -      },{
           "featureType": "road",
           "stylers": [
             { "saturation": -25 },
  
positive.code:     // Create an array of styles.
      var map_styles = [
        {
          "featureType": "administrative.locality",
          "stylers": [
            { "visibility": "off" }
          ]
        },{
          "featureType": "administrative",
          "elementType": "labels.text.fill",
          "stylers": [
            { "saturation": -100 },
            { "lightness": 20 }
          ]
        },{
          "featureType": "administrative.land_parcel",
  
negative.code:         { "visibility": "off" }
          ]
        },{
          "featureType": "poi",
          "stylers": [
            { "visibility": "off" }
          ]
  