Personally I'm happy the skin is not being painted. Have you ever looked at smaller action figures, such as star wars or GIJOE? Often times the painted heads look terrible in comparison to the ones molded in plastic color, because paint (to varying degrees) will always fill in cracks and crevices, which will reduce the overall sculpted detail seen by the naked eye.
Paint, no matter how thin, is still an additional layer that will sit on top of the sculpt, reducing its sharpness and clarity.
Admittedly, paint would probably not ruin the sculpted detail on a figure of this (larger) size, but I am still glad it's not going to be applied. NECA has never been known for spectacular paint, so if we can avoid the possibility of a big ugly "skin colored" paint app, I will be a happy camper.
To me, the molded plastic skin color looks freaking spectacular, and I consider myself very ____ about these things.
Just my 2 cents.