Hi,
This is something everyone else has probably already doing, but it is new to me.
I was tying some Sparkle Duns for the Sept Drake hatch on Soda Butte and the Lamar in YNP. I did not have any olive dyed deer hair.
So, I flaired the hair and then wove an olive dyed grizzly hackle through the deer hair to give it the tint of that color. I think it works well. You just cut the hackle flush at the bottom before dubbing the fly.
Let me know if you do this as well.
Thanks,
Byron