This is one of my all time favorite photos. I shot this image in 1977 as an example of what unique lighting techniques could be derived from a Black Light.  I built the set from strips of poster board that I painted with orange and green fluorescent tempera paint. The deep purple was actually white but since black light only produces light from the UV spectrum it appears this way. White is created, if you recall, by adding together equal parts of the total spectrum of visible light. The stripes were applied to the silverware by the use of a mirror tilted at a 45 degree angle just outside the view of the camera.