I just changed the background image on the RadPanelBar Root Items, which worked fine. But then I tried to adjust the padding on the Root Item Text Wrappers, and that didn't work at all. Not only can you not type in the boxes (you have to use the mouse to cut/paste), but nothing happens when you enter them. If you leave the screen and come back, padding and margins and such are changed back to the default values. I tried it on a few different elements, using both Default and Simple styles as the base. Is this feature not yet implemented? Because it's one of the main points in the introduction text. I've tried it in IE8 and FF3.