Question: pastels are limited to black and white because color cannot be added to a pastel binder?
Answer: Pastels are limited to black and white because color cannot be added to a pastel binder. This material is powdered calcium carbonate mixed with a gum arabic binder. A pigment combined with wax. ... Artists use this method by mixing pigments with hot wax and then apply the mixture quickly, when cool, is not very flexible.