Hi Drifter,
I think if you go to your local fly shot they should be able to set you up. Lots of patterns work, getting your swinging or skating fly in front of the fish will matter more than what particular pattern. John Shewy (a famous fly tier) says in his book "Steelhead Flies" says: "fly color seems more attuned to the whims of fashion than to any particular preference of the fish...I've yet to find a color that fish deem inappropriate"

Bottom line, pattern/color dont much matter. How the fly fishes and your confidence in the fly does matter. So pick ones that you believe in and fish them like you believe in them. If you are looking for some pattern to have confidence in, John S says he catches 80% of his summer fish on a Shewey's Spawning Purple and a Purple Matuka...he also says these are the two flies he fishes 80% of the time LOL...

Sizes 2 through 8 are a good bet. I like the larger ones but that's just a personal preference.

Good luck on the water!