Movie quote from The Movie Boogie Nights?

What is that funny quote from the movie Boogie Nights when Dirk Diggler is in the hottub.. I'm pretty sure he's in the hottub and he is telling people how he figured out what his name should be. My friends and I used to imitate him all the time lmao but I can't remember it anymore. I remember from the movie he sees the name Dirk Diggler in big bright lights and he says something like "and there it was, Dirk Diggler in florestent colors" something along the lines of that. Anyone know the full quote? Thanks