One thing is for sure, you won't have to worry about what color fly to tie one 'cuz that streamer has got 'em all!

Good fly advice from VT, I would add in Glo Bugs, and bring your box of medium to large trout nymphs- Hare's Ears, Caddis Larva, Stoneflies (black, golden, brown) and the like also work on Steelhead.