Alterando cor do marcador ao clicar e desativando ao clicar em outro

[filipesala 0]

Bom dia gostaria de saber se algume pode me ajudar quando eu clico no marcador ele muda de cor porem quando clico em outro ele nao volta a cor original

 

 

 

            console.log('Yet another Hello world');

            var map = null;
            var activeInfoWindow;    


            placesOfInterest = [
                { name: 'Charme da paulista', lat: -23.562172, lng: -46.655794 },
                { name: 'The Blue Pub', lat: -23.563112, lng: -46.650338 },
                { name: 'Veloso', lat: -23.585107, lng: -46.635219 },
                { name: 'Let\'s Beer', lat: -23.586508, lng: -46.641739 },
                { name: 'O\'Malley\'s', lat: -23.558296, lng: -46.665923 },
                { name: 'Finnegan\'s', lat: -23.559547, lng: -46.676794 },
                { name: 'Partisans', lat: -23.561049, lng: -46.682555 },
                { name: 'Morrison', lat: -23.555106, lng: -46.690883 },
                { name: 'Cão Véio', lat: -23.558130, lng: -46.679508 },
                { name: 'Cervejaria Nacional', lat: -23.564740, lng: -46.690641 },
                { name: 'Brewdog', lat: -23.561309, lng: -46.693935 },
                { name: 'Rei das Batidas', lat: -23.570613, lng: -46.705977 }
            ];

            const customIcon = {
                path: 'M0-48c-9.8 0-17.7 7.8-17.7 17.4 0 15.5 17.7 30.6 17.7 30.6s17.7-15.4 17.7-30.6c0-9.6-7.9-17.4-17.7-17.4z',
                fillColor: 'white',
                fillOpacity: 0.98,
                scale: 0.98,
                strokeColor: '#666666',
                strokeWeight: 3
            };

            function addMarker(marker) {
                for (var i = 0; i < placesOfInterest.length; ++i) {
                var marker = new google.maps.Marker({
                    map: map,
                    position: new google.maps.LatLng(marker.lat, marker.lng),
                    icon: customIcon,
                    title: marker.name
                });
                attachSecretMessage(marker, placesOfInterest[i]);

            }
            function attachSecretMessage(marker) {
                var infowindow = new google.maps.InfoWindow({
                    content: marker.title,
                    
                        
                });
                var cont = 0;
                google.maps.event.addDomListener(marker,'click', function() {

                    if (activeInfoWindow) { 
                    activeInfoWindow.close();
                    }
                    infowindow.open(map, marker);
                    activeInfoWindow = infowindow;
                    this.setIcon({
                        path: 'M0-48c-9.8 0-17.7 7.8-17.7 17.4 0 15.5 17.7 30.6 17.7 30.6s17.7-15.4 17.7-30.6c0-9.6-7.9-17.4-17.7-17.4z',
                        fillColor: 'black',
                        fillOpacity: 0.98,
                        scale: 0.98,
                        strokeColor: '#666666',
                        strokeWeight: 3

                    })
                });
            }
            }

            function initMap() {
                var mapOptions = {
                    center: new google.maps.LatLng(-23.562172, -46.655794),
                    gestureHandling: 'greedy',
                    zoom: 14,
                    mapTypeId: google.maps.MapTypeId.ROADMAP,
                    mapTypeControlOptions: {
                        mapTypeIds: [google.maps.MapTypeId.ROADMAP]
                    },
                    disableDefaultUI: true,
                    scaleControl: true,
                    zoomControl: true,
                    zoomControlOptions: {
                        style: google.maps.ZoomControlStyle.DEFAULT,
                    }

                };


                map = new google.maps.Map(document.getElementById('map'), mapOptions);
                


                //Adicionando o primeiro marcador como exemplo
            
            addMarker(placesOfInterest[1]);
            addMarker(placesOfInterest[0]);
            addMarker(placesOfInterest[2]);
            addMarker(placesOfInterest[3]);
            addMarker(placesOfInterest[4]);
            addMarker(placesOfInterest[5]);
            addMarker(placesOfInterest[6]);

            }