I don't like color in my command line windows. Colorization in ls's directory listings drives me bonkers; it's the first thing I turn off on a new system. I have, however, relented and added a little bit of conditional color to save me from an all too frequent error.
I have access to a lot of UNIX and UNIX-like systems. Some are machines I run, some are my employer's, and some belong to customers. Most all of them I've never physically seen but instead access through remote ssh, secure shell, connections. My normal command line prompt on these machines looks like: