live view for gradient settingsAdjusting gradient settings is very time consuming because the menu has to be closed to get the changes applied.
Often, the settings have to be tried and optimized iteratively.
A "live view" could help:

alternative:
direct mouse control of the gradient scaling settings: https://community.jmp.com/t5/JMP-Wish-List/mouse-control-for-color-gradient/idi-p/486588
GraphicsUser Interface