What color is chroma key paint for green screen back drops?
Green! Seriously, it can be just about any color that stands out from the foreground objects or people. A high-chroma green is most commonly used, but sometimes other hues are selected. The camera/processing system is set up in the studio to use the selected color as the region to substitute in other video content. Here is a link to one source of green and blue chroma-key paint.
