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> (I think for now my unhelpful response is: manipulate your RGB images as much as you like; just do it in the OKLAB color space.)

Good advice. I am often introducing photographers to color editing in Lab. They are always amazed at how much more sensitive their lightness and saturation adjustments are.

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> manipulate your RGB images as much as you like; just do it in the OKLAB color space

Be careful, OKLAB also isn't quite handling energy correctly (Or, the gradient of the energy slope in this color space had quite some irregularities). In most cases you can get a more "natural" transition (like blue doesn't visually shift to purple when transitioning to white), so make sure you know what you are doing.

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