The Museum of Modern Art's online exhibition "Van Gogh and the Colors of the Night" is the first exhibit to organize his paintings around the theme of night and twilight paintings. Since Van Gogh could not work solely from memory or imagination, he created these paintings in the dark or near dark. Some of his paintings, however, were of indoor light at night, so he didn't always face the obstacle of complete darkness. This exhibit is very straightforward and well organized, and includes audio clips, drawings, pages from his journal, and extremely high quality images that let you see those thick swathes of paint he so successfully employed. The exhibit also clues you in as to his relationship with his brother and sister, to whom he sometimes sent drawings of his work, or descriptions of the colors he was planning on using in a piece. Visitors shouldn't leave without contrasting his traditional and somber "Early Landscapes" of the Netherlands, where he was born, to his later landscapes of France, that have strong uses of vibrant color. The "Sowers and Wheatfields" section has some good examples of this use of color.