Paint is about the cheapest way to brighten a room. Or install different lighting. Or brighter-coloured towels and accessories.
Most agents will tell you not to bother as the overall condition of the property will be reflected in the asking price. Most buyers redecorate and alter soon after moving in so you will have wasted time and money.
Install a bright, white bulb, not a yellow hue one :)
Paint it a neutral color but add color with your shower curtain and towels and rugs.Make sure all the light bulbs are working.
When your home has a showing, out all soap, shampoo and so one away.No one wants to know what type of shampoo you use. https://images.search.yahoo.com/search/i...
This is pretty and looks great :https://images.search.yahoo.com/images/v...
Use bath size white towels with bright green finger tip towels and white face cloths.