Gamblin Artist Oil Colors - 37ml Tube - at least 30% off - Gamblin oil colors are luscious, intense, pigment-rich colors. Colors that do not succumb to age. Gamblin Artist Oil Colors are true to historic working properties, in a palette carefully constructed by America's premier colorman. Rather than copy any other style of paintmaking, Robert Gamblin developed his own. Made from the finest quality raw materials, Gamblin's oil paints invite artists to enjoy each color's unique tinting strength, transparency and texture.