Schmincke Horadam Aquarell Paint, 5ml Tube, Pure Yellow, 1 Each (14216001) Superior quality natural ingredients are carefully selected in each formula for highest optimization Carefully selected ingredients ensure a harmonious color assortment that can easily be picked up by the Brush An optimal amount of Ox gall enables the artist to decide (and not the paint) as to where the paint should flow moist or stay dry on the paper Transparent with good lightfast bright Yellow with modern organic pigment 140 colors in the horadam aquarelle line