Just posted a 3 part video series on painting up a Storm X-Men Custom Statue skin tone. I used garage kit colors for it.
Here is the list of colors
Garage Kit Colors
African Light, Medium Dark Flesh
Transparent Paynes Grey
Transparent Pale Flesh
Transparent Purple
Forumla P3 Flesh wash
Testors Dull cote
I don't have a specific formula of how i paint, its all just blending till i get the look i want. So had a chance to do a real time video on painting skin, so started off with this storm statue. Will post more down the line on skin tones when i can.

Video Part 1
https://www.youtube.com/watch?v=pFCTtrZea8w
Video Part 2
https://www.youtube.com/watch?v=8JZd2Cdh8Gw
Video Part 3
https://www.youtube.com/watch?v=GtwLH1-HQlk
