Torrey, great post, and this raises a question I was going to pose soon to you and Aaron regarding Steelhead flies. As you've said, and as I've witnessed over the past two months, the Steelhead flies tend to be anything but inconspicuous. They often have at least a single focal point, or "hot spot" usually identified by color. That being the case, is it because it is early in the season, and these fluorescent colors are attracting the fresh runs? Do the colors eventually get drabber as the season progresses (like with spring fishing versus late summer fishing)? I recently started tying some large stoneflies with a "hot spot" in the abdomen, under the wing case. I guess a more natural version would be the Montana Stone, with the yellow, nestled between the predominantly black counterparts. I tied one version of a stone with a crystal chenile abdoment, and some other vibrant additions. I'm wondering how successful they will be. That being said, I'm still tying plenty of eggs, as those will be the predominant food source.
Getting back to trout flies. I'm definitely going to have some natural drab patterns along with their parallel "hot spot" variations. It is funny sometimes. On heavily fished water, I imagine the fish are so used to seeing plain versions of flies, and in some other rivers, anglers probably tend to go in the other direction and use more vibrant patterns. This is probably dependent on the fishing community present at a specific river. For instance, I've fished the Deerfield a lot, and most of the patterns I see used are all "hot patterns", so that when I use something natural (or anyone else for that matter), it becomes really effective. I'm sure there are multiple examples of this other places, and regarding streamer patterns, and their "exotic" qualities.