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From: thaler@speedy.cs.wisc.edu (Maurice Thaler)
Newsgroups: sci.electronics,rec.audio
Subject: Re: Looking for Blue LEDs
Summary: Primary colors
Message-ID: <6411@spool.cs.wisc.edu>
Date: 7 Oct 88 17:11:51 GMT
References: <1138@nmtsun.nmt.edu> <862@ritcv.UUCP> <255@rna.UUCP> <4422@lynx.UUCP> <871@ritcv.UUCP> <870@dlhpedg.co.uk>
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Reply-To: thaler@speedy.cs.wisc.edu (Maurice Thaler)
Organization: U of Wisconsin CS Dept
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The primary additive colors are RED, GREEN, and BLUE. The subtractive
primary colors are CYAN, MAGENTA, and YELLOW.  Light works differently
than pigments.

I spent many years as a pro color printer where I spent lots of time
mixing light in a color-head enlarger. You need to know color theory
to do this right.