[flexcoders] Overwrite Skin to NULL

[Devin]

I've noticed if you put a skin in place then you can't create another 
style for specific changes.  Is there a way to overwrite a skin style 
to a null value or something to get rid of it in another style?  For 
example:


this is my panel style
Panel
{

        closeButtonDisabledSkin: Embed
(source="flex_skins.swf",symbol="Panel_closeButtonDisabledSkin");
        closeButtonDownSkin: Embed
(source="flex_skins.swf",symbol="Panel_closeButtonDownSkin");
        closeButtonOverSkin: Embed
(source="flex_skins.swf",symbol="Panel_closeButtonOverSkin");
        closeButtonUpSkin: Embed
(source="flex_skins.swf",symbol="Panel_closeButtonUpSkin");
        borderSkin: Embed(source="flex_skins.swf", 
symbol="Panel_borderSkin");
        titleBackgroundSkin: Embed(source="empty.swf", 
symbol="Panel_titleBackgroundSkin");
        borderThicknessLeft: 10;
        borderThicknessRight: 11;
        borderThicknessTop: 0;
        borderThicknessBottom: 3;
        headerHeight: 30;
}


I want a few of my panels to have white backgrounds so i use this 
style.

.panel { 
   border-alpha: 1;
   border-color: #ffffff;
} 


Because I initiated the skin the .panel doesn't work.  Is there a way 
to say set the skin style to null so I can get the .panel style to 
work?

such as 

.panel { 
   borderSkin: NULL (blank it out):
   border-alpha: 1;
   border-color: #ffffff;
}