My normal go-to damsel nymph which is tied in shades of olive stuck out. I eventually stared catching fish on much darker colored micro leeches. The leeches were, by no means, precise imitations and were not consistent producers. I believe the dilemma arises from a close inspection of an adult which had the normal slender body that was gray with black barring as opposed to the brilliant blue with black barring that I am used to seeing. Question? What might be the proper damsel nymph design, color, proper tie, etc. to match the adult that was described above?