Cartoon animation frames used to be drawn on clear sheets of celluloid. To save on time and labor, background illustrations, including any objects that arent moving, would remain unchanged with any action/movement being drawn onto higher layers.
When part of a stationary object moves, the drawings are on a different layer above the rest of the object. Light travels through the layers above the object *twice* before it reaches the camera doubling the amount of interference from the only *nearly* transparent celluloid. Thus, even when using the same color paint, objects with the same color will look like a more color saturated hue the further down the stack they are, and top layers will look lighter or washed out by comparison.
Latest Answers