Blaine and AJ in our fly shop mentioned this to me the other day. One of them had a pocket UV light like many of us have for curing UVKS, etc, and were comparing flies in the 'guide box' (i.e. ask the guys at the counter in the fly shop at BPS about it), and obviously everything blue was showing up mighty bright. Blaine and AJ guide up in RMNP and blue is always a consistently producing color there.
I tie a fair amount of stuff with fluorescent color thread, but was surprised by the freekin' *glow in the dark* look of a bug I've been working on as a favor for my friend Char Bloom (the gal who guides in pink shirts and pink vests in a pink, teal, and purple Hyde drift boat). I had joked a few years ago about tying up a 'pink box' of all pink flies. Or at least pink themed ones. I usually tie my personal spin on John Barr's Graphic Caddis in yellow olive thread with chartreuse wire in the tubing... and I just got some fluorescent pink UTC thread, had the other materials at home, and came up with this. I've seen pink used in a lot of things like Copper Johns, and wondered if a 'pink caddis' might also work on tailwaters, mistaken as a shrimp tumbling by, or a funky caddis?
Compared it to the originals, and they look particularly dull under longwave UV. These, however glow like crazy, both the thread, and surprisingly enough, the light grey ostrich herl. (For that shade, there has to be some blue in the dye used)
What other colors have you guys experimented with for the UV kick? Fluorofibre is bright, as always.
(Yeah, I have an old school 80's style black light that I use... used to collect fluorescent minerals... and I'm a bit of a geek anyway)