Abstract: Compositions and methods for changing the color of non-wood substrates. A one step method uses a solution of a water soluble pigment or dye and a metal salt. The non-toxic solution can be sprayed on a primed or unprimed substrate without wiping. The method can produce an even color on a smooth substrate, or a simulated woodgrain pattern or color on a textured substrate. The composition and method can be used on substrates as varied as fiberboard, fiberglass, steel, vinyl, plastics, metals, concrete, brick, stone, and stucco. The composition can include a resin which is emulsified when added and subsequently demulsifies. A two step method includes the additional step of applying a gall ink to the substrate. The compositions can be distributed as kits containing multiple packages of dry or concentrated ingredients, which make the final composition(s) when hydrated.