Anyone left alone in isolation, surrounded by blank walls tends to withdraw. Infants suffering from sensory deprivation may have difficulty readjusting to a normal environment as their whole personality may be affected. If normal persons develop these psychotic-like states, and simple mental distress on an airplane trip, the sick person may have severe emotional strain, metabolic disturbance and other problems. Schizophrenics may see color as an unwanted intrusion on their inner life, this type of rejection is known as color shock. Is the amount of light or dark in a color, regardless of hue.
Middle values are half way between a tint and a shade.
Darker values have a more advancing quality. Economic depression makes a person revert back to the palette they're actually living in, rather than the palette that would correct it. Appeal to high income groups. Yuppies use color in their environment in the status above their current position. Colors that contain a predominance of red or yellow.