Green and blue? Red and beige? Lime and white with a pop of orange? One of the most difficult elements of bathroom design is choosing the colors. Choosing colors for any room is challenging, of course, but the bathroom is a space that that presents a particular set of considerations. Below are three things to keep in mind as youâ€™re choosing, followed by three color-choice tips. Lighting. Lighting takes on a particular significance for bathrooms.