M Graham & Co. - Artists Watercolor - 15 ml - Prussian Blue - Artist Watercolor was formulated in a time when artists relied on natural materials, M Graham has created a watercolor with exceptional amounts of pigment in an old fashioned binding medium of pure gum arabic and natural blackberry honey. The result is watercolor of extraordinary strength that is easily diluted for smooth, controlled washes and deeper "darks". Alive with strength and intensity, M Graham Artists Watercolor made with honey absorbs moisture from the air, preventing hardening on the palette or in the tube. M. Graham Artists Watercolors are brilliant, highly pigmented and suitable for all traditional techniques with beautiful, even washes and no hard outlines. M Graham Artists Watercolor paint is now available in 70 colors.