Basically anything from ice cream green - Tiffany blue and anything in between but Aqua/turquoise is a safe bet for a color. Any shade bright or light.there will be something similar and blend able for either gender.
Blair Waldorf in Paris: "Whoever said that money doesn't buy happiness didn't know where to shop" my favorite quote from one of my favorite shows, before I die I need to do a shopping spree Blair Waldorf style!
Creative ideas for using the space under the stairs. Brilliant use of space! Not nuts about the bathroom idea though. I guess if you had a tiny home with no main floor powder room it could be workable.