I optimized the degree to which saturation is affected by luminance to create an isolated perceptual contrast adjustment that leaves chrominance alone. In reality perceptual contrast always involves chroma but the bleaching effect was way too strong previously. This was based on your feedback @aaron so thank you for bringing it to my attention! Super happy you’re liking how it turned out, I’m quite happy with it myself. Still tinkering with ideas for a useful subtractive channel mixer…