The button blanket is normally made with 3 colors; red, black, and white. In pre-colonial times, some blankets were made with blue duffel instead of black. All the colors have a certain spiritual meaning to them.
Red; is the border lining of the button blanket and outline for the design. The color Red, represents super natural power, wealth, and nobility.
Black; the black background was believed to make the wearer invincible. And Death, when letting go of bad thoughts and behavior. It is also a form of dying and being reborn.
White; the white buttons represented peace, harmony, and balance. They also formed the family crest, and were sown onto the red border lining of the blanket.
Blue; blue duffel blankets are related to Father Sky and Flying beings.
Purple; purple duffel blankets represents wisdom of the ages.
D., Jensen, & P., Sargeant (Robes of Power)