This is a script-fu of the process as described by gimpforphotos.com at: gimpforphotos.com two strip technicolor
I didn't create the process, I just wrote the script that does everything described in the tutorial!
More info on the process here: http://en.wikipedia.org/wiki/Technicolor#Two-color_Technicolor
When installed, this should show up under
Unless otherwise noted, the rights for the individual plugins are with their respective authors. Logo image by Jakub Steiner.