I haven’t fished Sulphurs here for many years since I spent so many summers in Montana.
However, unless the trout’s preferences for fly colors have changed, I always did best on orange bodied flies.
So why do you think orange worked so well? I dunno. Maybe for the same reason that purple bodied flies sometimes also work well when there’s no purple insects hatching. 🙋♂️
This isn’t the same orange dubbing that I used to use (I had used muskrat dyed orange), but I like this dubbing color. And pardon those big tails. I hope they won’t look quite so big when they get wet and some of the fibers mat together.
My go-to Sulphur dubbing for decades was a piece of road kill raccoon that I bleached. It resulted in a creamy tan dubbing that matched the Sulphurs on the Letort (where I most often fished the hatch) to a "T."
Those imitations featured a medium grey wing and light dun hackle.
Many locals went with a more orange body even though it is something I never encountered in a real Sulphur anywhere I fish in PA.
Later when I got lazy and away from natural furs I switched to plain light yellow poly for the body and decided that yellow would be a more appropriate color for the legs & tail. I use yellow dyed Whiting 100 packs for hackle and yellow Fibbetes for the tails.
The only time I vary from this color combo is my "Night/White/White" version tied with a white wing, white body, tails & hackle. I use this fly when the fish are still feeding and the light level is extremely low, meaning around 20:45 to 21:00 hrs because it is much easier to see.
Bottom line, the yellow/yellow or white/white combo works just fine, no better or worse than the old racoon versions and I suspect if I was so inclined, no better or worse than something in orange.
FWIW - One of my favorite soft hackle flies is a Purple & Snipe. Maybe I need to whip up a purple Sulphur...
😉
I'll add one other thing...
At the time of year, time of day and places where I fish Sulphurs, there are ALWAYS Little Black Caddis fluttering an inch or two above the water. They are hard to see unless you lower your head to almost level with the water but they are there.
It is REALLY easy to be so focused on the early stages of the impending Sulphur hatch and throw nothing but duns or emergers to rising fish. However if the fish are refusing your Sulphur imitations...
Try a Little Black Caddis imitation...
YOU may just discover (like I have 100's of times) they AREN'T taking Sulphurs. Before this suggestion starts another pattern choice thread, all I use for a Little Black Caddis is an all black Elk Wing Caddis in size 18. I've also used a beetle in a pinch.
🙂
Have fun!!