Change hue based on light

It's unlikely that even Rick's expression solution will work. Due to indirect light scattering and bouncing the colors will still be uneven. It might make a lot more sense to use large feathered edges and blend in your patches with a little adjustment. It may not be exact, but it's probably more pleasing to the viewer. If you don't get your color corrections 100% correct, even the tiniest deviation will make it look extremely fake and annoying.

Mylenium

You can use an expression to take a point sample of color to drive the color of a Color Control. Then you can link that to other color properties but I'm not sure about the math required to turn a color sample into a lightness and hue value. Probably just a lightness value. It would take some experimenting.

You could add Effects>Expression Controllers>Color Control to a null then add this expression to the color Control:

f = thisComp.layer("YourFootage.mov");

point = position;

f.sampleImage(point, radius = [.5, .5], postEffect = true, t = time)

% bra

This will give you a Null that you can position directly over the area you want to sample and the color values of that sample.

The next part is the hard part. You have to figure out how to turn Red, Green and Blue values into some kind of a percentage of change so you can adjust the lightness. Just pointing to the expression Controller will give you an array for color like this: [.5, .5, .5, 1]. The range of values is between zero and one. That particular array would give you 50% gray with no transparency.    

Now all you have to do to figure out the color correction is to figure out the math to turn the changing RGB values into something that can be used by color correction.

On the other hand you may be better off just using Color Stabilizer