Commercial office, 20+ people sharing 2 single person bathrooms. Bathrooms around corner from open office cubes. Want to add 2 (recessed can?) tied in with each bathroom light so open office can see. Kinda like an airplane signal for bathroom occupancy, without the BING? 60x20 open office furniture, Don't need to get crazy. Originally thought of 2 6" cans with the recessed shower trims that are like a hockey puck ( hang down 1"). Maybe somehow color one of the glass pieces red for women's. Any thoughts?