Water color and clarity, time of year, and preferred forage have alot to do with what color works and when. You'd be best painting up a few of each of the most popular colors. Shad will almost always bring some success, but chartuese, firetiger, and crawdad colors can be super effective when the conditions are right. I cant think of a more productive pattern than crawdad for smallies on quite a few major waters here in PA. Then again, chartruese and firetiger can really tear em up too when the time is right. For largemouths, my go to colors are shad and chartruese/white, especially in lakes and bodies of water that are more clear and higher visibility. I have just about a box full of each, and those are just about the only colors I ever use.