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Why are you normalizing to 1

Why are you normalizing to 1 and after that ruining normalization with multiplication? Not to mention that your justification for multiplication the way you do it is not convincing.
If you have green at clipping already in raw data, and white balance promotes red and blue channels, you have minus green, that's magenta / purple, as an magentish highlights. So the question is: what clipping value to use? Suppose you have a 14-bit raw, and the green channel clips at the value of 14000 (that's before subtracting black).

Iliah Borg