Hey Sandman!
Glad to hear of the success!
I was always partial to blue since the colour of this fly with blue flash (I can post the variation materials if you guys want) literally looks exactly the colour and length, and even the shape of the needle fish I've seen on the beaches and in the bellies of fish. Ever since switching to green though, and the success I have had with it off the beaches and in the rivers, I keep going back to it and the blue is on the back-burner.
Maybe it is something to do with how the needle fish's sides reflect under water (maybe it's more of a greenish reflection under water, rather than the bluish/grey tint we see above?), or maybe it's just them seeing something different that has the right size/profile. Maybe it just annoys them? I guess I'll never really know but it does really catch their attention.
The one thing I have noticed is that the small BLUE pattern out fishes anything else I've ever tossed for chinook in the RIVERS. I have literally had 5 or 6 chinook peel off schools on the first pass fighting over who gets it. Like I said however, beaches for some reason the large green one is the best for everything, and in the rivers the small green is best for coho, chum, cutties, etc. One of those weird things, that I've tested over and over but always had the same results.
Cheers,
Dan