Polaroid Goo-o-Grams

My goo-o-grams are a hybrid form of imagery possible only with certain kinds of Polaroid color films. Polaroid's developing cream (goo) is apt to do strange and wonderful things if it's smeared on the photosensitive area of a Polaroid sheet. The actual smearing must be performed in total darkness. After a smear is complete, the film is processed normally. I have not made a goo-o-gram in over twenty years. Polaroid's current films may no longer support this procedure.