 To
process the color I convert from RGB to LAB color space. LAB
consists of a luminance value (L) and 2 chroma values (A+B).
Multiplying A + B with a constant increases color saturation
without changing luminance. However I found increasing A and B by
the same amount produced bright orange where there should have
been red. Changing the two independently seems like a useful
start to controlling the colors.
I have something much fancier in might (see my LABwarp {google
it} program for a clue as to what is ahead).
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