Actually, after I posted the comment I looked again and suspected watercolor. I also love to work in watercolors. I feel like I can get more subtle, progressive tones that way. I still have trouble with flesh tones, though.
ikr , I like the grunge they give. Im still having trouble with the skin tone as well , its hard to make them consistent . but thats whats good about watercolours it helps you be more recreational and much more in tune with your colors , since , aa what ive stated before its hard to make them consistent.