On or about 25 November 1889, Vincent van Gogh wrote to Emile Bernard from Arles:
"So at present am working in the olive trees, seeking the different effects of a grey sky against yellow earth, with dark green note of the foliage; another time the earth and foliage all purplish against yellow sky, then red ochre earth and pink and green sky. See, that interests me more than the so-called abstractions.”
