make tree widget 3-d

[Ian Zimmerman <itz buug org>]

Hi, when I put a GtkFreeView in my window, either directly or within
an intermediate GtkScrolled Window, the result has a flat white to
gray boundary.  I'd like my lists and trees to have the same sunken
three dimensional look as edit boxes have, is that possible?  Is 
there a general way to do this with any widget?

-- 
"It's not true or not."  A reality show producer (real quote)