Anybody who has been involved in theater for more than the briefest amount of time becomes very familiar with flat black paint. Black is the theatrical invisibility cloak - if you aren't supposed to see it, it is painted black. Black paint also doesn't reflect light (compared to other colors of paint), so it becomes much easier to control lighting. And since things are often painted and repainted, black is easier to "color" match (easier, but not perfectly easy). However, at the Barn, black isn't a normally present color. Instead, everything tends towards brown - the wood of the barn, the dirt floors, dust, and cobwebs. So, at the Barn, our theatrical invisibility cloak is brown, flat brown.
Photo by Robert Schulz, suggested by Brian Oglesby