Bob, great article! My job doesn't require a whole lot of thinking (lumber yard), so my mind often is on fly fishing and fly design. The article gave me lots of things to ponder!
I am coming to believe more and more that priority isn't necessarily on exact color matching, but more priority on shape. For warmwater fishing, expecially in murky water, if it looks like food it will at least be tasted.
Color DOES play a part, but I think it's priority number 2 by a ways.

Great thoughts to ponder about how we choose our flies and how we design our flies!