The ones I saw up in First Meadow weren't bright green like others I'd seen nearby in Montana, although I did catch some fish on a green Hairwing Dun. Since the fish below the campground can be a bit picky, it may be worthwhile to show them something closer to the natural.

hook - WFC Model 3 #10
thread - Uni 6/0 olive Dun
tail - moose body
rib - tying thread
body - deer hair dyed dun
underwing - Congo Hair Baitfish Grey
hackle - dun
wing/head - deer hair dyed dun

Regards,
Scott