[xmonad] window decorations

Hi, is there a way to decorate windows in XMonad? I'm thinking of a small title bar in which the window title is shown (nothing graphically complicated, only a simple constant color rectangle, maybe a simple 3D emboss effect). By itself XMonad seems to support only a single-color border indicating the focus state of the window. And I did not find a contribution allowing decorations either. So my question: Is there already something allowing me to decorate windows in XMonad? Or are there plans to implement such a thing? Cheers, Daniel