Pie Charts with Overlays
I’m not sure why I concentrate on Pie Charts. Maybe circles are just more attractive to me than bars or points 
For the January 2009 Expression Newsletter (which will be out in a week or two), I put together a rather deep article on styling pie charts in the Silverlight Toolkit. At the end, I mentioned to check here for info on overlays.
One effect you can achieve with an overlay, is a glassy effect:
Continue on
Pete Brown’s Blog.
