M. Graham Artists’ Oil Colors are made with a walnut oil binder, an alternative to traditional linseed oil that’s been preferred by artists for centuries. In fact, today it’s known that Renaissance masters such as Da Vinci and Durer generally favored walnut oil over linseed oil. Walnut oil provides rich, vibrant color that is naturally more alive and brilliant than traditional linseed oil. Free flowing and slow drying, M. Graham’s walnut oil formulation enables delicate passages of finely blended color that retain their brilliance over time.