Thanks for the comments
Andreas, regarding skin colors ... 3 different light sources , auto white balance, and I made no effort to make the skin color look the same
1. ambient light, overcast sky, red floor
2. speed light bounced of a white wall, plus crazy processing, b&w layer, analog efex pro
3. studio lights , this one looks the closest to reality
here is 2. without the additional PP, and it is yet another skin tone