the pet chimpanzee's funeral scene. Wilder replied, "you know, just your standard monkey funeral shot." For some interior shots, Seitz sprinkled dust in front of the camera before filming to suggest "mustiness," a trick he had also used for Double Indemnity (1944). The film had the option to be shot in color, but it was instead shot in black and white to be more reflective of the noir genre. Wilder was adamant that the corpse of Joe Gillis be seen from the bottom of the pool, but creating the effect was difficult. The camera was placed inside a specially constructed box and lowered under water, but the result disappointed Wilder, who insisted on further experiments. The shot was finally achieved by placing a mirror on the bottom of the pool and filming Holden's reflection from above with the distorted image of the policemen standing around the pool and forming a backdrop. Film historian Tom Stempel writes, "In both Double Indemnity and Sunset Boulevard, Seitz does something that has always impressed me. Both are films noir, and he finesses the fact that both are set in the sunniest of locales, Los Angeles... he brings together the light and the dark in the same film without any seams showing... he brings together the realistic lighting of Joe Gillis out in the real world with the gothic look of Norma Desmond's mansion. Again with no seams showing." Edith Head designed the costumes. Wilder, Head, and Swanson agreed that Norma Desmond would have kept somewhat up-to-date with fashion trends, so Head designed costumes closely resembling the Dior look of the mid-1940s. Embellishments were added to personalize them and reflect Norma Desmond's taste. Swanson recalled in her biography that the costumes were only "a trifle outdated, a trifle exotic." Head later described her assignment as "the most challenging of my career," and explained her approach with the comment, "Because Norma Desmond was an actress who had become lost in her own imagination, I tried to make her look like she was always impersonating someone." Head later said she relied on Swanson's expertise because "she was creating a past that she knew and I didn't." Head also designed the costumes for William Holden and the minor characters, but for authenticity, Wilder instructed Von Stroheim and Nancy Olson to wear their own clothing. The overstated decadence of Norma Desmond's home was created by set designer Hans Dreier,