[xwiki-users] how do I apply theme colouring to the Panel macros.

Hi, I'm trying to use the panelheader() and panelfooter() macros inside my htmlheader.vm file however the boxes that get displayed do not have the skin's colour scheme applied to them. They appear correctly but in plain white instead of the blue tint that has been setup for the toucan skin. I have dug through the panel application and through the css files however I haven't been able to find what tints the panel backgrounds. Can anyone point me in the right direction on either how to apply the blue tint to the background or what files to look at? Thanks, Radek