Just for fun I thought I'd post this Kodak patent for a Film with Color Filter Array, U.S.P. 6,387,577.

It's interesting that Kodak has patents from so recently that deal with making, basically, screen-plate reseaus. Of course, there is application for digital sensors (Bayer arrays), but this one in particular would be suited to film.

It's a brilliant idea and would allow the screen to be in front of the emulsion, yet allow processing like normal. As opposed to exposing through the base like a typical screen-plate.