Our own mix with no black in it so it can go warm or cool. Very versatile for mixing. Can be very deep and moody and can tint subtly when mixed with white. Originating from the Williamsburg neighborhood of Brooklyn, over one hundred seventy artist quality oil colors are now made in New Berlin, NY. Each color is milled in small batches to provide a unique expression of each pigment used. For that reason, our paints are not homogeneous, as some colors require a very fine grind that results in a rich, smooth paint, while others are best allowed to retain more texture and provide a little more resistance and less gloss. Technical Detail Lightfastness rating Opacity / Transparency Semi-Opaque Drying Time Fast (1-2 days) Grind Fine Pigment Detail PBr7 CI number:77491 Common name:Brown Iron Oxide Classification:Natural Inorganic Chemical Description:Calcined Natural Iron Oxide PB27 CI number:77510 Common name:Prussian Blue Classification:Organometallic Chemical Description:Ferriammonium Ferrocyanide