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Imagine you can change the LAB L* without affecting Saturation/Hue

Imagine you can change Saturation without affecting Hue/L*

Imagine a new representation of RGB color model

True Achrome (a*=b*=0 ; H=S=0 ; B=L*)

Hue UP (+10), no change for Sat/L*

Saturation UP (+10), no change for Hue/L*

L* (Lstar) UP (+10), no change for Sat/Hue

Can you do this, with only one adjustment layer ?