This is what I could find with a quick search, Stylin' Trucks presents: DupliColor Night Lights Reflective Paint - YouTube
It is reflective clear coat in a rattle can. This may work for what you're talking about but it isn't what I was thinking of when I searched. I saw, a year or 3 ago, a bicycle that had been painted with a reflective black paint and when the car headlights hit it in the dark it would shine like no nobodies business.
Maybe someone else with better search fu can find what I'm talking about, I just don't have the time right now.