A few years ago I played around with polymer clay colors. This is yellow mixed with red. The squares at the end are unmixed. The diamond in the center is the two colors mixed, 1/2 of each color. The circles are different ratios of mixing, 1/32, 1/16, 1/8, and 1/4.
Karen Lynne Creates 
Nice experiment and a good way to see what color mixing results in.
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