I will be making a cake that needs skin tones, not sure what color to use???? Any suggestions?

Copper would be the one.. I usually add a little chocolate brown to it, but just a little.

The Copper color (wilton) will work. I tried it in fondant and it turned out fine, but I would add just a little at a time depending on how much icing you have.

Americolor fleshtone

i've tried this and it looks skintone to me... a little bit of cocoa powder and tiny bit of red... i used it on fondant.

I guess it would depend on what flesh color you need to achieve. I either use Wilton ivory or varying amounts of Wilton brown.