I tied some green weenies with glow in the dark nightlight condoms about three years ago. I caught fish on them, but honestly it wasn't any better than the regular green weenie.
For night fishing, you're better bet is to throw something huge that moves water. Big fish don't really want to eat nymphs, not even if they glow in the dark.
As for color, trout can't see color at night because there aren't enough photons available to stimulate the associated rods and cones. It all looks like shades of grey to them (and probably for you too - but there is even less light underwater).