I have revised my Relative Color Correction CTL script. In this time, I have added Gamma adjustment for correction value and applying uniform strength option. And I have rearranged parameter control items in the UI.
For Gamma adjustment, originally correction amount was based on perceptual (Gamma 2.2) data (Gamma value was fixed and not adjustable), however in this time, I have changed its Gamma value adjustable (0 to 2.2). You can confirm this adjustment effect with target area preview.
(original)
(preview Gamma 2.2)
(preview Gamma 1.0)
(edited result in Gamma 1.0)
You can download it from following (same) link.