Dear of troy: a case of absinthe mindedness?

From the Internet:
"But really, the reason anyone bothers to visit Auvers is because of a couple of famous inhabitants who lived there in the late 1800s. It was here that Vincent Van Gogh came to paint in his last summer, 1890. In 70 days he produced 70 canvases, many of them now classics, freezing the town and it's inhabitants in time. Could his daily glass of absinthe be responsible for the vivid colors in these works?"