It's hard to believe, but colors really determine a person's life in many aspects. Cold and hot tones have different wavelengths and therefore are even physically perceived differently. Red has the longest wavelength, and a person needs more energy to perceive it. As a result, the body is actively stimulated, breathing and pulse quicken. It excites and attracts attention.
Psychologists, designers, artists and marketers around the world use knowledge about the intricacies of the impact of color on the psyche and subconscious of a person in their work.