> Uh...the rainbow contains the entire spectrum. It has every color 
> possible with a single wavelength. It would look quite strange with 7 
> colors.

Yes, I knew that, but you know that when children are drawing their 
firsts drafts, they draw a horse, a house, the familly with a rainbow 
and they ask what colors are in a rainbow.  I remember having identified 
7 colors of the full spectrum that were known to be visually very 
identifiable when looking at a rainbow.  It is those 7 colors I wish to 
know (though it's already been answered elsewhere in this thread).

Thanks,
   Xilo

-- 
Dedicated to audio/visual and interactive artwork.
Author of The Primary Colors of CSound:
http://www.geocities.com/simonlemieux/PCCS/index.html

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