We do the same thing with Cabling, which is color coding it for remote sites and for our Data Centers. We also have diagrams for remote sites, that show how to connect all cables on the network equipment. Step by Step instructions for inserting a cable into a port on a switch, and even step by step instructions for installing/uninstalling fiber modules. We get less calls when we deploy any equipment because of the detailed diagrams we provide.
In the Data Center each patch panel is color coded so we know what type of system the patch panel goes too. We have use the colors to identify IBM racks, Intel Racks, or Network racks. It is a lot easier to trace those cables.