The color process used for the film (Ansco color, but labeled in the credits as Metrocolor) is supposedly unsuitable for long term color preservation. As a result, many prints have lost the extraordinary brightness of the movie's images.
Parts of the film were shot in Auvers-sur-Oise, where Vincent van Gogh lived and died. Kirk Douglas had his hair cut specially in the style of the artist and had it dyed to a similar reddish tint. This was enough to make some of the older inhabitants of the town believe that Van Gogh had returned.