The knobs are silver to match the mirror and the head doorknobs. Behind the left vanity door is the plumbing for the port shore water pressure regulator inlet valve and the deck wash outlet from New Found Metals. No levers, it's automatic.This through hull location used to be the port tank vent and the deck wash used to be the fill port. The port tank location is now the house (only) battery bank. Another regulator valve is where the bilge pump outlet used to be. The bilge pump now exits through the stern. That was a major job that was done while the refer cabinet was out of the way so the hose could be installed under and through the insulation