Can't parse color "Black"

[Philipp Bliedung <philipp.bliedung@bliedung.de>]

Hi

I installed XFree 4.0.2 and some other packages to my potato box from woody
(mainly because of Gimp 1.2) - but now I get this message when I try to start
some programs:

Application initialization failed: unknown color name "Black"
or this error:
Color name "black" is not defined
can't parse color blak

Most of the programs do work.
What package do I miss?
What does it mean 'can't parse color black'?

Thanks,
Philipp