Which nude works for me?

Honestly nude doesn't have to be an exact match, so you could wear them all really.

But colors PK20 and PK1A match your tone most closely. It's very hard to decide between those two on picture.

As for the model of the shoe, I like Pigalle follies best on your feet.
 
Okay, everyone here is going to conclude I'm color blind, but I promise I don't see a difference. To me they all look fine on you. That probably doesn't help you. But if anyone else chimes in with the same thought it maybe something to consider.