Figure 6-1-2 Mistake-Proofing the Design of Health Care Processes - Figure 6.1. Color-coded wiring Return to Document Figure 6.2. Color coding on the back of a computer Return to Document Current as of May 2007 Internet Citation: Figure 6-1-2: Mistake-Proofing the Design of Health Care Processes -. May 2007. Agency for Healthcare Research and Quality, Rockville, MD. http://www.ahrq.gov/professionals/quality-patient-safety/patient-safety-resources/resources/mistakeproof/mistakefig6-1-2.html