Tip 1: Consider the room size
The colour of your floor has a major impact on the feeling of space you get in a room. Warm or dark tones, like wenge, walnut or oak, tend to make large rooms seem smaller and cosier. Conversely, if you are cramped for space already, consider lighter, natural floor colours like beiges, light oak or maple to really open up a room.
Tip 2: See the light
Throughout the day, the lighting in your room changes. Judging a sample colour at night, by artificial light, will give you a different impression than during mid-afternoon in the sunlight. Of course, light colours will give a dark room a sunnier feel. In bright spaces, with floor-to-ceiling windows, a dark or even black floor colour can add a dramatic edge.