Android Button Skin transparency issue

The new Button skin for Android 4 has a visual issue when used on a dark background (it's almost invisible). I tried using a chromeColor style to bypass this, but the skin seems to ignore it.

Thanks!

<?xml version="1.0" encoding="utf-8"?>
<s:Application xmlns:fx="http://ns.adobe.com/mxml/2009"
xmlns:s="library://ns.adobe.com/flex/spark" applicationDPI="160">

<s:Rect width="100%" height="100%">
<s:fill>
<s:SolidColor color="#000000"/>
</s:fill>
</s:Rect>

<s:Button left="10" right="10" top="10" height="30" label="The Button" skinClass="spark.skins.android4.ButtonSkin" chromeColor="#FF0000"/>
</s:Application>