Available online, the Quick Color Change Procedure from Dyna-Purge, Depew, N.Y. is aimed at helping processor transition from a dark to a light color. This procedure is a continuous process and utilizes a pre-determined amount of purge. The purge is introduced when the resident resin is in the feed throat. The operator continues to make parts until the purge becomes apparent and, therefore, no longer “starves the screw” of the resident resin. The next color resin is introduced when the purge is in the feed throat and the process continues until the resin is free of purge. This process is said to be very efficient and can result in significant savings in material and time.