mrdoob/three.js — pull request #4965 by flimshaw (2014-06-23 16:48:54+00:00)
Title: Added a Technicolor shader

I've been teaching myself shaders, so I dropped in a very simple one I made last night that simulates the two-strip color process used in early 20th century movies.

Example here: http://charliehoey.com/technicolor_shader/shader_test.html