holographic filter brush. it puts some rainbows in your art to make it look a bit like an oil spill. works best with low opacity (10-40%). layering can get you a nice range of colors. only works if used directly on the base color layer.

holographic filter brush. it puts some rainbows in your art to make it look a bit like an oil spill. works best with low opacity (10-40%). layering can get you a nice range of colors. only works if used directly on the base color layer.