[flexcoders] How personalize panel contener

[Germain]

Hi,
i want personalize the panel contener
I don't want the rounded corner, and the blue in the background ?
How i do it ?
y exemple :
<?xml version="1.0" encoding="utf-8"?>
<mx:Application xmlns:mx="http://www.macromedia.com/2003/mxml";>
<mx:Style>
titlePanelDemo {
font-family: Verdana, Arial, Helvetica, sans-serif;
font-size: 10px;
color: #00CC33;
background-color:#CCCCCC;
font-style:italic;
font-weight:bold;
border-cap-color:#FF6600;
background-color:#66CC99;
border-style:dotted;
border-color:#663333;
border-cap-color:#33CC00;
}
areaPanelDemo {
background-color:#FFFFCC;
border-cap-color:#000000;
border-color:#33CC66;
border-style:solid;
}
controllerPanelDemo{
font-family: Verdana, Arial, Helvetica, sans-serif;
font-size: 10px;
font-weight:bold;
color: #FF0000;
}
</mx:Style>
<mx:Panel id="demoPanel" title="Panel demo" width="200" height="100%" 
titleStyleDeclaration="titlePanelDemo" styleName="areaPanelDemo">
<mx:ControlBar height="50" styleName="controllerPanelDemo">
<mx:Label text="Texte "/>
</mx:ControlBar>
</mx:Panel>
</mx:Application>