Another thing is if you put together Yellow
Ochre and Payne’s Grey – sorry, that wasn’t Yellow Ochre; this is Yellow
Ochre – and Payne’s Grey, and it will form generally a deep olive brownish-green because
Payne’s Grey is more of a cool grey rather than a warm grey. And you can make it even
cooler by putting Prussian blue in there, which is a deep blue-black. So this can form your olive tones.