Structured Wiring Cable Color Convention
Cat5e cables are really the only cables that give you much of a choice when it comes to jacket colors. You can easily find them in blue, green, purple, orange, yellow, red, grey, white and black. I chose to not use grey, black and white because those are the only colors some other cables come in so I reserved them for that use. I chose not to use yellow and orange for premise wiring because white, yellow and orange are commonly used for electric wiring and I wanted them to be easily distinguished visually. These colors may be used as patch cords however.
I'll go into more details but here's the basic color coding for residential structured wiring.