[PyMOL] rgb to cmyk woes

[Roger Dodd]

Hi all,

I'm trying to prepare some figures for publication and of course the 
journal requires them in cmyk format. I have produced the images in 
pymol using the cmyk color space and saved them as png files. However, 
the png files themselves are in 24 bit rgb format if I'm correct. Trying 
to subsequently convert them to cmyk format tiff files in photoshop or 
coreldraw results in all the colors being mangled (becoming duller and 
darker). Is there some trick to converting to the cmyk color space 
without altering the colors - I assumed working in the cmyk mode in 
PyMOL would ensure this didn't occur?

Thanks in advance for any help

Roger Dodd