Oil and bitumen on board 50 X 60 cm
Bitumen paint is made to repair a leaking roof. It is dreadful stuff to work with, sticky, stinking and as black as can be. It is like the dregs of a barrel of crude oil, but when dried on a painting it can be a sublime, rich, and deep black. Pure black like Japanese lacquer, but with a velvety softness. Oil paint applied in a thin wash over a pure white base acts like a sheet of coloured glass through which light passes and reflects back off the white base. This can illuminate the colour from behind and make it glow.