Bathroom wall color...help!?

Why not just match the white of your wall tiles and use your art, window valance and shower d, area rugs, towels, and accessories as your accent color(s)? You could seasonally change your accents (blue & yellow for spring; something bright for summer; red and white for Christmas; silver/black/purple for winter, etc.) and not grow weary of any particular color scheme. White walls can look very sophisticated when the accessories are right.