I remember many years ago, in the magazine "U.S.Camera" an article by Polaroid about shooting B/W to get color! One used B/W film exposing I think one exposure thru a red filter and one thru green.The film was processed and a copy positive made. Mounting the positives in slide frames/holders they were projected at the same time via slide projectors onto the same screen, one on top of the other. Using a polarizer filter (on each lens or only one?) the black and white became color! I tried it. Though i did not get full color like Kodachrome, i did see some color. Not just fringes. The better the exposure and positives the better the color. Can anyone remember this alternate process? Polaroid released it hoping someone, somewhere could make it more..