https://mononodes.com/hue-twist-dctl/

The “Hue Twist” DCTL works by ‘twisting’ hue values towards their neighboring colors, but the interesting aspect here is that it does so based on the brightness value of the respective hue. Darker areas are automatically shifted towards the opposite adjacent hue value than lighter areas, adding a depth of complexity to the color manipulation process that goes beyond standard hue shift methods.  Additionally, the tool offers flexibility in determining the brightness threshold and the intensity of the transition between bright and dark regions. This added control ensures users have a broad and tailored manipulation of the image.  Overall, the Hue Twist DCTL is a precise color grading tool, providing a new approach to adjusting color hues by adding brightness as a determining factor, therefore expanding the creative possibilities in color grading.