His doctor’s letters have been published in the latest British Journal of Psychiatry. Jonah Lehrer has a fascinating discussion of it here. Money quote from the doc:
Vincent was above all a miserable, wretched man,… he would talk to me about complementary colours. But I really could not understand why red should not be red, and green not green!… When I saw that he outlined my head entirely in green (he had only two main colours, red and green), that he painted my hair and my mustache – I really did not have red hair – in a blazing red on a biting green background, I was simply horrified. What should I do with this present?
The painting below the fold:
The Dish 