A powerful but little-used Color Correction tool in CinGG, because of its complexity, is the HSL Qualifiers, called Blue Banana by its creator (Monty Montgomery).
There is a wonderful book on CC whose chapter on HSL Qualifiers is available free of charge on the publishers website:
After reading these explanations, try testing the CinGG plugin and you will see that it will be easier to understand it and make it work, taking advantage of its enormous potential in the CC environment.