Answer : The three most important things to consider when choosing the colors for your bedroom's décor are reflective light color, room temperature (surface temperature) and personal preference.
The first thing you should decide is what color of light you want in your space. To do this consider the time of day that will be illuminating your room with natural sunlight or artificial lights at night from lamps or sodium vapor fixtures. When daylight is present, warmer colors like reds and yellows can help create a cozy, inviting atmosphere while cool colors like blues help us feel more refreshed and energized. At night it's generally best to use cool sources of light so that colors don't become too warm.