I found the answer
.buttonBar {
firstButtonStyleName: "mybuttonBarButtonStyle";
lastButtonStyleName: "mybuttonBarButtonStyle";
buttonStyleName: "mybuttonBarButtonStyle";
}
.mybuttonBarButtonStyle {
selectedOverSkin: ClassReference("xx.MyButtonBarButtonSkin");
upSkin: ClassReference("xx.MyButtonBarButtonSkin");
overSkin: ClassReference("xx.MyButtonBarButtonSkin");
selectedDownSkin: ClassReference("xx.MyButtonBarButtonSkin");
selectedDisabledSkin: ClassReference("xx.MyButtonBarButtonSkin");
}
public class MyButtonBarButtonSkin extends Border
{
override protected function updateDisplayList(w:Number, h:Number):void
{
//var borderColorDrk1:Number =
// ColorUtil.adjustBrightness2(borderColor, 50);
var borderColorDrk1:Number = borderColor;
}
}