Colour Coding may be slightly more expensive and a little more administrative overhead for keeping stock levels up but it helps dramatically for troubleshooting. I use a different method than services but more to what type of network traffic is going over it. It is not for being attractive but for finding that trunk cable instead of tracing labelling quickly. I still like to have the cables labelled too but sometimes those other admins want to get in and out quickly when there is an issue and the same coloured cables become a blur.