[flexcoders] TitleWindow closeButton Color

[jmfillman]

Is there a style for the color of the closeButton in a TitleWindow? I can't 
seem to find it, but it seems odd to have black be the only option. Can't seem 
to embed an image for the closeButtonSkin either.

Setting a style in CSS doesn't work, or...??

TitleWindow {
     closeButtonSkin: Embed("assets/close.png");
}