Traditionally, jeans were dyed to a blue color using natural indigo dye. However, most denim today is dyed with synthetic indigo dye. Then either wool, linen or silk would be dyed. Muga silk can be dyed after bleaching. Most denim is now dyed using synthetic indigo. The cloth is hand dyed with indigo. Black wool was considered commercially undesirable because it could not be dyed. Textiles are often dyed, with fabrics available in almost every colour. Wool has excellent durability, can be dyed easily and is fairly abundant. However, yarns need not be dyed. Coyote fur is sometimes dyed black as imitation silver fox. Her satin gown was probably dyed with kermes. She dyed her hair purple and took up modeling. Geodes and geode slices are sometimes dyed with artificial colors. For a coloured ground it is then dyed.