"Virtually hundreds of lures and fishing materials have been poorly designed and intended to catch fisherman and not fish." (What Fish See by Colin J. Kageyama, O.D.)
"Too often, today's anglers cannot resist bright colors and built-in eye appeal. Tackle boxes are filled with gear that looks great...but never catches a fish." (The Scientific Angler by Paul C. Johnson)
As an angler and rig builder, I fear I resemble those remarks. Those are three excellent books that will or at least should change one's perspective on what is in the color and design of a fly or lure.