Using Walnut Oil, M. Graham Oil Paints has given the modern artist an oil color with extremely concentrated pigment, freedom from discoloration and superior handling properties. Walnut Oil also gives the artist greater freedom and control over their color without the addition of fillers or solvents and takes the oil artist back to some of the medium’s finest traditions. M. Graham Oils are made in small batches. Each color is highly saturated with most colors based on single pigments for superb clarity and maximum tinting strength.