GREEN: Represents nature, environment, health, good luck, renewal, youth, vigor, spring, generosity, fertility, jealousy, inexperience, envy, misfortune.PURPLE: Represents royalty, spirituality, nobility, ceremony, mystery, transformation, wisdom, enlightenment, arrogance.
RED: It is the warmest and most energetic color in the spectrum. People tend to associate red with love, valentines, danger, desire, speed, strength, violence, anger, emergency exit signs, stop signs and blood. It can make the heart beat faster.YELLOW: Represents joy, happiness, optimism, idealism, imagination, hope, sunshine, summer, gold, philosophy, dishonesty, cowardice, hazard, spirituality and inspiration.
ORANGE: A combination of yellow and red, orange is considered a warm color like red, but to a lesser extent; orange expresses energy. It has luminous qualities and has been used for attention-getting purposes, such as on caution signs. It symbolizes balance, warmth, enthusiasm, vibrance, flamboyancy, and is demanding of attention.WHITE: When all colors come together in perfect balance, we see white. It represents reverence, purity, simplicity, cleanliness, peace, humility, precision, innocence, youth, birth, winter, snow, good, sterility, and marriage.
BLACK: When there is the absence of light, we see black. It represents power, sexuality, sophistication, formality, elegance, wealth, mystery, fear, sadness, anonymity, unhappiness, depth, style.
[via Bloomberg University]