[metapost] How to use CMYK color

[Taco Hoekwater]

Steven Woody wrote:
> why the following statements can not pass the metapost? thanks.
> 
> cmykcolor gray;
> gray := (.6, 0, 0, .34);

Works for me, you probably have to update your metapost (or tex)
distribution. I recommend TeXLive 2007: http://tug.org/texlive/

Best wishes,
Taco