Color in OpenGL example?

Hi all, 
  I've been playing with the openGL examples in LWL and LW Mac OS.
I've got the icosahedron example working just fine on LWL, and I've had
it working fine on one Mac. But on one PowerBook G4 when I run the 
example, the faces of the object are all greyscale. I know color works in 
the pane because when I choose the textured option the texture comes
up in color. 

It's probably more likely a problem with the machine, since the example
_does_ work on the other machines. Has anyone else seen this kind
of behavior, or have any explanation for it?

=====================
Joshua Taylor
tayloj@rpi.edu