I painted my whole interior of bathroom/shower combo with Interlux Brighside. The same stuff I will be using on the outside of the egg (once I get to that point). It was stinky, and even after a few months still had a slight smell but we have showered in it and used the potty (with shoes on) and the floor still looks new.
The marina that I purchased the Interlux from said that you can also add tint to the
paint and get virtually any color.