Wilton Copper will give you fleshcolor..So will Americolor but just a very tiny bit to start with...
I've always made flesh with (light) orange, light pink, and then white as needed. Kiddiekakes's method is probably easier.
I've also done it with just the smallest amount of pink and a little brown. You can also use peach and brown.
I bought the Strawberry Shortcake colors many years ago, and used the flesh tone out of it. Some of the other character colors also have a flesh tone color in them.