The faces look too red on my calibrated monitor, despite a white shirt. I had a similar situation with my D700 shooting raw with auto white balance. Go to the shooting menu, then select picture control. After selecting neutral (my recommendation), use the right arrow on the multifunction button to see what adjustments have been made to "neutral". In my experience, a small increase in saturation here affected reds disproportionately. Also, this setting seems out of place in the menu and does not trigger a visual indication on the screen, so after setting it once, it's easy to forget about it.