What exposed ceiling painting in Louisville involves
Everything overhead gets sprayed the same colour. Joists, ductwork, pipes, wiring, the underside of the subfloor above. Usually a dark charcoal or matte black, sometimes white in a space that needs all the light it can get.
The trick is that one colour stops your eye separating the individual objects. Instead of reading as a mess of pipes it reads as a single dark plane with texture in it, and the eye moves on. It works better in person than it does in photographs.