The key with using bright or dark hues of purple is to make a statement; don't shy away from painting every wall in your room - forget the "feature" wall. A shade of purple with an injection of red or pink tones within it can actually open up a small room when you may think it would box you in instead.
Many people like the idea of purple but worry at the prospect of matching accessories to their new wall colour. It isn't as difficult as you might think. Purple walls can actually even look great against lime green furniture, the only trick you have to learn is finding the right shade of the colours you are matching. For example, though I have recommended lime green, a grassy-shade of green may actually clash against a red-purple wall, however, the same green might look great against a lilac wall.
A good idea is to get colour swatches and try them against your shade of purple to see if it works with your own taste.