This is a Kohler website, and it has some lovely ideas: KOHLER: Planning Tips: Powder Room Tips: Bathroom: Articles
They recommend deeper colors rather than pastels--or neutrals--and vessel sinks, though I've read elsewhere that vessel sinks are passe. (That never stopped me from doing what I want.) They also recommend slate, hardwood floors (I still don't want wood floors in a bathroom), quartz (I want that), and thick crown molding and baseboards. They have some other good ideas too, though I don't care for the faucet (top one) shown at all or the vessel sinks, though I've never cared for them, although there are some beautiful ones out there. They're just not practical.