I'm in the middle of planning my own bathroom update project and am finding myself surprisingly in love with simple black and white color schemes. Glass door and tile options are lovely, but if you want a simpler solution, the simple minimal pallet of black, white and either a touch of natural wood, stone or gray lets you go a bit more wild with patterns. Jump in!
Lighting options can be tailored to the style without worrying about color as any fixture with a matte black finish option should work perfectly. I'm a big fan of the classic dome light style, as it works with a variety of home styles with a modern touch of rustic that also works for the beach.
Take a look at Metro Shower Curtains' design options for more ideas!