My monitor has adjustments for RGB, which I used to calibrate the white balance. They had heavy impact on the whole curve, but mostly in the middle.
And THEN my monitor has separate controls for RGB Gain and Offset. Those do not seem to change RGB balance at all... or I am missing something? They do seem to affect gamma at both ends. I always thought RGB gain and offset adjust RGB white balance on lower and upper ends, but this monitor has those separate RGBs controls that are not offsets or gains and they seem to adjust RGB white balance most.