I black wash the prepainted heroclix figure. Then base coat the colour I intend on using and highlight up. Still takes me around an hour.
They are based on a mix of pieces of slate (picked up off the road) and some filler. I was trying to get the impression hulk had just smashed into the ground from a jump.
I painted the base while the undercoat was drying (I was impatient), effectively blending the colours I dry brushed on together.