Yes! I'm having a similar issue to the OP: Kids playing in the pool get a greenish tint to the undersides of their faces. Hue-shift (in the HSL panel) to correct the green in their faces works beautifully, but now the lush trees in the background look dead & dry.
I'm switching from Aperture, and it has the ability to "brush in" or "brush out" any adjustment. (Rather than restricting masks to a sub-set of adjustments.) Please make all adjustments maskable or brushable.