I bet bass poppers did awesome in frogwater after dark. I've fished mice imitations in backwaters of the bow at night.
max are you saying that instead of a black / dark fly you would tie something like a white caddis for after dark? I've experimented with some goofy shiz, like using a hot pink elk hair caddis, and they still eat it. I'm not so sure color makes on damn bit of difference. It's all about profile and your presentations. I do think the theory surely makes sense that.. they'd see something white, after dark, a lot better than something that's darker. My biggest brown (and maybe my biggest bow river fish fish ever) was on a white bow river bugger, at about 2AM