>>121457369Yes. Van Gogh had a pretty deep understanding of color theory, and proportions etc. He was an insane craftsman. Maybe he couldnt name the literal frequencies, as the had not yet been discovered, but he was not ignorant as to how colors blended, and could easily describe to you how to do it. He could even explain to you how to make oil paint, what ingredients you need, the ratios required, etc. Standard knowledge for people of his trade.