I think it matters some times. Sometimes not. When fishing the night shade I REALLY think it matters. Stripers will sometimes use shaded banks created by moon light to hide from bait.
I like to fish across from marinas when I can because that area always has light on it at night so the fish expect it there.

Sorry to not be of better help on the black light question. Most I know, including myself, just go as dark as possible and make shorter more accurate casts if the fish are right on the bank.