The skin is a reaper Triad. Ghoul Flesh, Moldy Skin, Bloodless skin with some controlled washes. Bigger picks here. I sent some more details to you in a PM.
http://jgemrich.smugmug.com/gallery/4646649_N7kTJ#277857377_QW7H2-O-LB
I am about to start puttng together my frst corpse cart and need ideas or help with a step by step tutorial on how to go about painting it, I love what you did with yours here, any help specially on flesh?