I have a chevy 2001 tracker and I need help identifying the stereo wires. Help :)?

[AllisonAndreano]

I am replacing the factory radio with a JVC KDR-200. I had found the factory wiring diagram online but the colors do not match the colors of my wires. I have done a couple other radios myself on other cars and have always been able to find the right diagrams. Does anyone know where to find a free diagram or can help me identify my wires? Or should I make life easy and just buy a wire harness adapter? Oddly, I do enjoy the work though.