This is a coloring technique I tried lately using TVP, the Idea was to color my sketches in a more simple but effective way. I didn't improve it yet but I like the result. which was a bunch of old guys!!
These were concept sketches of a "Djini" or "Jini" I don't know how to spell it in English! it's a creature from Arabic literature, I did this with my Cintiq using TVPaint.
TVP is a smart animation software, also I found it very easy to use and more importantly.. very LIGHT. a student of mine recommended it for me. at the beginning I underestimated it, but I was wrong.. the software was incredibly powerful, the funniest thing.. I started to like the software as a drawing and sketching tool! anyway just try it and you'll see.