Bedroom Colour Choice
Different bedroom colours have different properties and produce different emotional responses. Here are a few points to consider when designing your bedroom decor and picking a colour scheme:
Black & White
These are probably the most obvious "colours". Black is distinctive and often fits the mood of teenagers. However it does tend to make a room feel smaller, possibly even oppressive. It also makes it more difficult to light. Clearly if you're going for a gothic themed bedroom then black is an essential, but try not to overdo it! It works best as an accent to deepen and shadow certain areas.
White has the opposite effect, enlarging and lighting a room. However this lightness can produce too much of a glare for some people and be less than restful.
Blue & Green
These are generally seen as calm, peaceful colours. The associations with nature are obvious - green vegetation, blue skies and seas. They can help some people to relax and forget the tensions of the day. They are often used as sleeping colours for adults.
Some blues can look very "cold" so be careful not to use them to excess.
Reds & Yellows
These are warm and friendly, however they are also often exciting, active colours. They aren't usually seen as conducive to sleep and relaxation and so are probably best avoided in quantity on the bedroom walls.
Of course there are times when you want your bedroom to be an exciting, active place. For this reason some people like to have reds and yellows as "temporary" colours. For instance, red bed linen or throw cushions can be put into place when in a romantic mood.
Whatever you choose as your primary bedroom colours, flexibility is always an advantage. Bedding, wall hangings etc are useful in this regard. You might want to consider some posters or artwork which is chosen primarily for its colour and can be quickly changed depending on the situation and your mood. If you like abstract art then much of this is colour based - you might want to consider prints of an artist such as Rothko, one of my personal favourites.