Male Baetidae (Blue-Winged Olives) Mayfly Nymph Pictures

I see the grayish tint as more of a Salmon tint. I would tie up some variations and test them. I tie all my nymphs with a variegated coloration rather than a blend. This works on most flies and I try to match the tones to the segment(band)of the natural as you sugested. I have had much success with this approach.

OK, this olive nymph seems to have a good bit of grey in it. I know colors vary a lot among baetids, but I'm wondering about a good general color for shucks. And nymphs. Are most of them more olive than this? Or is it too hard to generalize? Also, I notice darker and lighter segments in the abdomen. I've noted this in subvaria's and try to get a lighter band just ahead of the darker tail segment in nymphs I tie for them. Perhaps this is a good idea with baetid nymphs as well.