Openlayers:如何在线要素周围添加彩色边框

<div id="map"></div>

var vectorLayer = new ol.layer.Vector({
  source: new ol.source.Vector(),
});
map.addLayer(vectorLayer);

var feature = new ol.Feature({
  geometry: new ol.geom.Point([longitude, latitude]),
});
feature.setStyle(
  new ol.style.Style({
    stroke: new ol.style.Stroke({
      color: 'red',
      width: 2,
    }),
    fill: new ol.style.Fill({
      color: 'rgba(255, 0, 0, 0.1)',
    }),
  })
);

vectorLayer.getSource().addFeature(feature);