There was a nine-month wait for film stock and Technicolor cameras because they were being used by the US Army to make training films. The decision to film the scenes of the "other world" in black and white added to the complications. Where the "other world" is seen, it was filmed in Three-Strip Technicolor, but no colour was added during the printing process, giving a pearly hue to the black and white shots, a process cited in the screen credits as "Colour and Dye-Monochrome Processed in Technicolor". (As Conductor 71 remarks during an early transition, "One is starved for Technicolor up there.")