found: Work cat.: Color codes : modern theories of color in philosophy, painting and architecture, literature, music ... 1995:p. 1 ("The sheer multiplicity of color codes attests to the profound subjectivity of the color sense ...")
found: Kodak's ergonomic design for people at work, 2004:p. (Color codes: using color to convey meaning depends on the operator's ability to identify a particular color; color is probably the most abused type of coding)
found: Plumber's field manual, 1996:p. 285 ("Color codes are common in wiring")
