Can someone give a short tutorial on how to use the Color Corrector effect? I can brute force trial and error clicking around on all of the wheels until the color looks a little more reasonable. But the results are less than successful. I have yet to figure out what to use the eye droppers for, but I assume they are there for a reason.l I'm probably asking for too much, but here's a scenario: I have similar shots from two cameras; in one shot a dress is red, and in the shot from the other camera it's more magenta. Is there a systematic way to tell the color corrector that the magenta dress ought to be the red from other shot? I guess I'm lookng for a "color matching" technique.

What is the 'best practices' way of using this effect to color correct?

Thanks.