Lighting
Good lighting is the key to making any room scheme work 24 hours a day. I've always maintained that to be truly flexible, any room you intend to use a lot needs to have at least three different sources of light. Almost every room will have some kind of ceiling light (which should really be on a dimmer circuit) but in addition you should also think about table lamps, standard lamps, wall lights and of course candle light. Carefully located around the environment, this choice of light sources will give you the flexibility to create completely different moods at different times of the day.