How to change the default color used by openlayers hover?

Question

It is possible to change the color of highlightCtrl when I use onselectedHover? Default is light blue.

I want to change it to another one eg. red? Does anyone know where this value is defined?

Answer 1

When you define your layer you could specify your styleMaps as well:

_layer = new OpenLayers.Layer.Vector("My Layer Name", {
    styleMap: new OpenLayers.StyleMap({
        "default": new OpenLayers.Style({
            strokeColor: "#ff0000",
            strokeOpacity: .7,
            strokeWidth: 1,
            fillColor: "#ff0000",
            fillOpacity: 0,
            cursor: "pointer"
        }),
        "temporary": new OpenLayers.Style({
            strokeColor: "#ffff33",
            strokeOpacity: .9,
            strokeWidth: 2,
            fillColor: "#ffff33",
            fillOpacity: .3,
            cursor: "pointer"
        }),
        "select": new OpenLayers.Style({
            strokeColor: "#0033ff",
            strokeOpacity: .7,
            strokeWidth: 2,
            fillColor: "#0033ff",
            fillOpacity: 0,
            graphicZIndex: 2,
            cursor: "pointer"
        })
    })
});

Then specify your renderintent:

_highlightControl = new OpenLayers.Control.SelectFeature(layer, {
    hover: true,
    highlightOnly: true,
    renderIntent: "temporary"
});

Answer 2

The other way is to edit directly the style.css archive in the ol/Theme/default directory of your Openlayers library. Look for this code and edit it:

.olHandlerBoxSelectFeature {
border: 2px solid blue;
position: absolute;
background-color: white;
opacity: 0.50;
font-size: 1px;
filter: alpha(opacity=50);}   

Hope this will be useful to you.