It matters what colors are a crossed from each other because they grab peoples attention and when they are complementary they make all the colors blend in better, so its not so crazy. you can concentrate on one thing. 

RED:energy, positivity, action, war, danger, strength, courage.

GREEN: spring, growth, renewal & rebirth, balance, nature, grass & gardens, stability, possessiveness, jealousy, envy, fertility, safety, money, recycling.

BLUE: the sea, the sky, trust, honesty, loyalty, sincerity, peace, tranquility, intelligence

BLACK: strength, death, excitement. 

WHITE: freshness, calmness. 

PURPLE: royalty, imagination, power, luxury, wealth, extravagance, ambition, wisdom, magic, mystery.

YELLOW: creativity, sunshine, happiness, energy, cowardice, deceit, warnings, instability, clarity, activity.

ORANGE: enthusiasm, happiness, gut reactions, spontaneity, adventure, risk-taking, autumn (fall) and harvest creativity.

BROWN: power.

http://webdesign.tutsplus.com/articles/understanding-the-qualities-and-characteristics-of-color--webdesign-13292