Please click on the link below to see a very comprehensive list of Ribbon Colors prepared by Craft'n'Scraps
Here are few popular Ribbon Colors and Purposes
Black - Mourning
Blue - Abuse, Violence
Green - Organ Donor
Pink - Cancer
Red - AIDS
White - Right to Life
Yellow - Hope & Support
See our other article on ribbon and medal colors for sports, events, chambers and more. Award Ribbon and Medal Colors