what is actually a gud colour for skin? from humbold or revell??
I mix my own flesh tones, and they closely match the factory color.
Consider:
1) Applying your primer for a white base.
2) Take acrylic paint and mix white, red, and yellow (start with white, add red, then add yellow to soften the red) until you get the tone you like. Even in the days I painted Warhammer I mixed my own flesh tones. Granted, I was also an art student and the teacher weaned us to mix our own colors...
If you are wanting to paint hands, this will be problem, as if you paint the inside of the fist the paint will inevitably strip off if the figure is given something to hold. Maybe airbrushing or paint that bonds with plastic will get around that. You likely won't find bonding paint in flesh tones, though.