<?xml version="1.0" encoding="utf-8"?>
<!-- http://blog.flexexamples.com/2008/09/02/setting-the-selection-color-on-a-linkbutton-control-in-flex/ -->
<mx:Application name="LinkButton_selectionColor_test"
        xmlns:mx="http://www.adobe.com/2006/mxml"
        layout="vertical"
        verticalAlign="middle"
        backgroundColor="white">

    <mx:Style>
        LinkButton {
            selectionColor: haloOrange;
        }
    </mx:Style>

    <mx:LinkButton id="linkButton"
            label="LinkButton" />

</mx:Application>