correct... made your teeth look really purplish whitish while you were swirling around faking a dance with your girl friend on the hardwood. also gave an odd (zombie-like) cast to your eyes.
skating rinks also loved black lights and used them extensively during that time frame.
there was a whole mess of black light stuff... posters, body paint, ear rings, necklaces, etc... that gave STRANGE colors and such when beamed with such light.... yet looked ordinary under normal lighting.
i once skated with a pretty girl in a skating rink... a fine looking lass that seemed interested in me. and was a bit shocked when they lowered the normal lights and cut on the black lights... on her forehead with the UV paint, she had spelled out... "just ask. yes, i will." lol... i suppose she had done that during a trip to the bathroom a bit earlier.
ah, so of course i "did" ask. (psst...and yes, she did.)
Beowolff