Red is the color of fire and heat, so it is associated with energy, strength, power, determination as well as passion, desire, and love.

Red is a very emotionally intense color. It enhances human metabolism, increases respiration rate, and raises blood pressure. It has very high visibility, which is why stop signs, stoplights, and fire equipment are usually painted red. In heraldry, red is used to indicate courage. It is a color found in many national flags.

Red brings text and images to the foreground. Use it as an accent color to stimulate people to make quick decisions.

To the human eye, red is a very hot color, so it gives the sensation of heat. Red increases oxygen supply to the brain, produces an invigorating effect, and stimulates mental activity. It is highly accepted among young people. Rd is associated with healthy food and stimulates appetite. Red associated with Yellow ( Orange ) is the color of fall and harvest. In heraldry, red is symbolic of strength and endurance.

Green is the color of nature. It symbolizes growth, harmony, freshness, and fertility. Green has strong emotional correspondence with safety. Dark green is also commonly associated with money.

Green has great healing power. It is the most restful color for the human eye; it can improve vision. Green suggests stability and endurance. In heraldry, green indicates growth and hope. Green, as opposed to red, means safety; it is the color of free passage in road traffic.

Green is directly related to nature, so can be used in promoting ‘food' products. Dull, darker green is commonly associated with money, the financial world, banking, and Wall Street.