Color Attributes of Feathers:

White ~ Pureness, gladness, a birth,new beginning
Green ~ New prospects, adventure, money
Red ~ Fortune and good luck
Rose ~ A love affair, romance
Blue ~ Love, a gift
Brown ~ Good health
Yellow ~ Friendship, companionship
Orange ~ Happiness
Grey ~ Peace of mind, tranquility
Purple ~ A journey or a trip
Blue and White ~ A new love
Brown and White ~ Health and happiness
Grey and White ~ A new, positive situation
Black and White ~ Balance
Black ~ Misfortune, bad luck, the unknown
Yellow and Green ~ Beware of gossip and small talk

This was taken from a Yahoo! Group called "Magic Light."