I've been checking out a 3d printer and the files that make crank baits. I noticed they also have files that make the stencils used in airbrushing, scales, stripes and other little odds and ends. I watched some you tubes and they were just using the colors of the pla they were made with. They were catching bass, but apparently they work. As to color I think it's a personal preference since we keep changing them until we find what they want. I also noted some where painted to glow, some where made to rattle also.