This macro attempts to make footage look like it was shot with older film processes. This is based on the technicolor work done for Aviator though it transformed into a much more empirically based approach and less of a technical approach.
There is the 3 color process as well as a 2 color process. A ColorMixer property mixes between these two processes. This mixing isn't based on anything but does give some rather good looks. There is also yellow dye and black level controls.