The most important upgrade you can make in your bathroom involves lighting. A Swedish study found that lighting, coupled with the right color, affected mood. Changing lighting is not difficult or expensive, but it does give the bathroom a cooler and bigger look.
Older fixtures and fluorescent lighting cast unattractive shadows and strange color tones on your skin. If replacement of an accessory is not possible, you can replace some fluorescent lamps with fluorescent lamps of a similar color to design lights on a sunny day.