Colored stencil film

Each frame of an extra print of the black-and-white film to be colored was rear-projected onto a sheet of

frosted glass, as in rotoscoping. An operator used a blunt stylus to trace the outlines of areas of the projected image that were to be tinted one particular color. The stylus was connected to a reducing pantograph that caused a sharp blade to cut corresponding outlines through the actual film frame, creating the stencil for that color in that frame. This had to be done for each individual frame, and as many different stencil films had to be made as there were different colors to be added. Each of the final projection prints was matched up with one of the stencil films and run through a machine that applied the corresponding dye through the stencil. This operation was repeated using each of the different stencils and dyes in turn.