I don't know if anyone else has tried this, but I've found that when mixing plaster or hydrocal for use on scenery it helps to mix the paint color you want the ground to be directly into the plaster. It doesnt effect the curing properties of the plaster and saves you another step if you want to cover the whole area with one color. It also eliminates those annoying specs of white that sometimes show through paint and ground foam. :mrgreen: