When Aaron Schuman asked Klein if he dreamed in black and white, Klein shot back, “In black and white, of course.” But his photograph Tatiana + Marie Rose + Camels, Morocco, he had it both ways. 
Featured Image: William Klein. Tatiana + Marie Rose + Camels, Morocco, (Vogue), 1958.Silver Gelatin Print.
See Aaron Schuman. “An Interview with William Klein.” https://aperture.org/blog/magazine-interview-william-klein/