Almost from the very beginning fly anglers have spent much debating the importance of the color, size and shape of the artificial fly. Some believe shape and size are the most important and that color is the least of the important factors in the design of an effective imitation.
Every angler who ties artificial flies has their own beliefs on the subject and often has countless stories to support their stance on this subject. However I believe in approaching such a heavy subject based on research and countless hours of on stream observation and a heavy dose of common sense. Sometimes when we tackle a fly fishing or fly tying problem we tend to focus on one or two disciples such as research to include scientific data and the writing of others and therefore often tend to form opinions without completing the research and without apply good old fashion common sense.