Many variables contribute to our quality of sleep, like stress-levels and whether or not we exercise. A less obvious factor is what bedroom colors we choose to design or paint with. When selecting paint colors for bedrooms, the first thing to consider is temperature. While warm colors advance toward the eye and appear more active, creating a stimulating effect, cool colors—the hues from blue green through blue violet, most grays included—tend to recede, producing a more calming and relaxing effect.