On Wed, 12 Dec 2012 03:15:14 -0500, Dale wrote:

My Uncle is an artist

I have ten years work experience as an imaging system engineer

I was always under the impression that CMY were the color complements or
opposites of RGB

he and apparently many others use a color wheel where the are other
complements or opposites to RGB

does anyone know why this situation is? are there two rights or is
someone wrong?

http://en.wikipedia.org/wiki/Complementary_colors

indicates that it depends on what your primary colors are - the
complement of a color is obtained by mixing equal portions of the other
two primaries.