Colors and Their Meanings

Gray- Elegance, humility, respect, reverence, stability, subtlety, wisdom, anachronism, boredom, decay, decrepitude, dullness, dust, pollution, urban sprawl, strong emotions, balance, neutrality, mourning, formality, March.

White- Reverence, purity, snow, peace, innocence, cleanliness, simplicity, security, humility, marriage, sterility, winter, coldness, clinicism, surrender, cowardice, fearfulness, unimaginative, air, fire, death, hope, Aries, Pisces (star signs), January.

Black- Modernity, power, sophistication, formality, elegance, wealth, mystery, style, evil, death, fear, anonymity, anger, sadness, remorse, mourning, unhappiness, mysterious, seriousness, conventionality, rebellion, January.

Red- Passion, strength, energy, fire, love, excitement, speed, heat, leadership, masculinity, power, danger, gaudiness, blood, war, anger, revolution, radicalism, socialism, communism, aggression, stop, Mars (planet), respect, Gemini (star sign), December.
Studies show that red can have a physical effect, increasing the rate of respiration and raising blood pressure; the red ruby is the traditional 14th wedding anniversary gift; red sky in the morning, sailor's warning; red sky at night, sailor's delight.

Blue- Seas, skies, peace, unity, harmony, tranquility, calmness, coolness, confidence, conservatism, water, ice, loyalty, dependability, cleanliness, technology, winter, depression, coldness, idealism, obscenity, tackiness, air, wisdom, Earth (planet), Virgo (light blue) and Aquarius (dark blue) (star sign), strength, steadfastness, light, friendliness, July (sky blue), February (deep blue), peace, mourning (Iran), truthfulness. love.
In many diverse cultures blue is significant in religious beliefs, believed to keep the bad spirits away.

Green- Nature, spring, fertility, youth, environment, wealth, money (US), good luck, vigor, generosity, go, grass, aggression, inexperience, envy, misfortune, coldness, jealousy, illness, greed, life, air, earth (classical element), sincerity, hope, Cancer (bright green, star sign), renewal, natural abundance, growth, health, August, balance, harmony, stability.
During the middle ages, both green and yellow were used to symbolize the devil.

Yellow- Sunlight, joy, happiness, earth, optimism, idealism, wealth (gold), summer, hope, air, liberalism, cowardice, illness (quarantine), hazards, dishonesty, avarice, weak