Custom painting spoons for ice
Get some powder paint, heat the surface with a heat gun that you want to paint, then sprinkle the paint on. If you do a lot, you can buy the inexpensive spray gun for it, that's what I use for doing musky spinnerbaits. Then be sure to cure the jig or spoon so the paint stays on. The powder paint is really durable.
Lots of youtube videos on this as well. Check em out.