Without a doubt, olive or olive and grizzly are the favored color of bugger selection on Blue river. Coming in second place, I would say that black is the next color of choice when fishing a bugger. However, there are times that an olive or olive and grizzly or black bugger couldn't bribe a trout to get on the hook.
I have found, over a good time, that when the trout are refusing the favored colors it is time to try brown. Now, as to why brown sometimes works when other more used colors won't, I do not have a clue. However, with that being said, I am convinced it is usually water color or clarity. In certain water conditions... brown just works.
With this being another non-fishing day, I tied up a couple of brown buggers tonight and am hopeful to try them soon. I like to tie skinny bodied (dubbed body) buggers. I tie the tails different ways including sparse, full, short, and sometimes long (a perfect invitation to tormenting myself with short strikes). I never know which variation is going to work the best and that is part of the chase... keep changing brown bugger patterns with different tails and see what happens.
I was within six miles of the river today, but, still couldn't manage a way to
steal borrow the time to get there.