You definately cant beat egg paterns in any standard colors or multy colored eggs.

I make a easy fly that worked good in alaska and hooked a few on it down here when ive tried it. You clump some mariboo on the back of the hook shank and tie an egg on the top. Usa any color combos you whant. I like to use contrasting colors. I call it the big ugly. I gues it could be some type of leach but it also looks like a jig without weight.