Pigment Classification: Synthetic OrganicColor Index Name: PR112Color Index Number: 12370Chemical Description: Naphthol AS-DOpacity/Transparency: Semi-OpaqueLightfastness Rating: 2Permanency: Very GoodMunsell Notation Listing: Hue 6

and is semi-transparent

Guignet of Paris patented the process for manufacturing Viridian Green in 1859

but a musky

graphite gray daniel smith akvarelmaling VertJaune Olive Pigment Classification: Synthetic OrganicColor IndexExploration of this color reveals some surprising pigment properties beyond its obvious opacity. First, Graphite Gray disperses well and quickly in water so floating the dense pigment onto water or into a wet wash offers and interesting handling method. A dry brushstroke quickly followed by a wet brushstroke spreads some of the pigment leaving the texture look of the drybrush. Aged and weathered wood, fence posts and old buildings are fine candidates