C&D Rodney Mullen, what's even the name of this one? @chromegnats traded me this one a few years ago. The overprinting on the screenprinting (which I think was Screaming Squeegees) of this is immaculate and what I use to illustrate the concept to people. Instead of printing a spot green, for instance, it is made by printing a translucent yellow over a blue. I utilize this concept a lot as it results in vivid tones and less work on press but my god is mixing inks confusing sometimes.