Horse color is an important factor in the identification of horses. The most common colors are BAY (3 letters), roan (4 letters), CHESTNUT (8 letters), SORREL (6 letters), DUN (3 letters), PINTO (5 letters), GRAY (4 letters) and dapplegray (10 letters). BAY is a reddish-brown color, roan is a mix of white and red hairs, CHESTNUT is a reddish-brown color with lighter mane and tail, SORREL is a reddish-brown color with no white hairs, DUN is a yellowish-brown color, PINTO is a mix of white and brown patches, GRAY is a mix of white and black hairs and dapplegray is a mix of white and GRAY hairs.