Thanks for the help fellas. Now, this is interesting: I turned the saturation in the highlights to zero, but upped the saturation in the shadows. By monitoring the L*A*B values like Charles Cramer suggested, that upper right areas now reads just about absolutely neutral, but it still looks slightly warmer relative to the rest of the image. Proof that you can't trust your eyes! I'll be interested what you guys see, now. Russ, when I completely desaturate, it looks a tad too cool to me and if I warm it up by 1 or 2 points in WB, I am back where we started.