Color does more than beautify. It affects our moods and energy levels, influences our sense of temperature, and alters our perception of space. The most basic guide to the impact of color is warm vs. cool: Warm Colors – Shades of red, yellow, and orange are cheery, animating, and bright. They can even stimulate appetite and conversation. Cool Colors – Blues, greens, and violets are more calming and serene. These hues lend a feeling of harmony to a home.