Organic – Copper Phthalocyanine Green probably ties with Phthalo Blue and Deep Purple as the strongest pigment in the range. Atomic Tint Power, add it with great care! Ferocious acidy blue-green hues and blue undertones come to prominence in mixes with yellows. In common with the Blue it displays, on curing and when used virtually unmixed, a certain tendency to show surface bronzing. The ruination of many a student’s work, use with great caution! Always check in a good light as it can silently destroy a painting till seen in a true light when it is too late! This colour is otherwise known as the embalmer is has been the ruination of many a student work as it tends to invisibly leach into all other colours on the palette, till one stands back and sees in a good light what has happened, caution!