Dyes were expensive in the medieval world,and the wealthier you were the more colorful your clothing. The penchant for colorful garb spread to textile horse covers called caparisons in the twelfth century. They became common by the first quarter of the thirteenth century. A noble could display his family coat of arms on the caparisons. This enabled people to recognize them in battles and tournaments.
TODAY IS THE FINAL DAY to nominate my medieval novel: