What do the colors mean on the radio wires in a 2001 cavalier?

if u r planning tp put a aftermarket radio in and u want to do it yourself go to walmart and get the 2003 up wiring kit. i realize that it says 2003 up but i have a 2002 and i tried a regular wiring kit and it burnt my computer out in less then a month so i would say $40 is better then $100's