How can I change BPP (bits per pixel) in KDE?

[Robert Tilley]

I began working in KolourPaint and received the message that colors may not 
display correctly and that I needed to go to more than 24bpp.

I'm running on a 1280x1024 LCD monitor.  All references tell me that this 
resolution automatically uses 32 bits.

What's happening here?  What does the message mean?  How can I fix the above 
warning?

Thanks,
  Clueless on the 'net, Bob
-- 
Release the DVDs: 45 5F E1 04 22 CA 29 C4 93 3F 95 05 2B 79 2A B2