Saturn cassette/radio wiring colors?

I'm new to the forum, so "hello everyone".  On to the question.....  I'm lacking cash, so I bought a second-hand factory Saturn stereo (from Goodwill).  It's like new and it came out of a VERY recent model so I figured it would be a good radio for the money.  The thing looks like the one they put in the 2000 S-Series, molded to the curves of the dash and having a "rounded" design to the buttons and what not like the newer cars.  Anyways, I have looked at countless wiring diagrams on the internet & in books but haven't been able to find any of the GM/Saturn radios with the same wiring colors.  I've even tried looking at new wiring harnesses to get the list of colors, but they're just not the same.  The wiring is as follows:

Front speakers - brown, green, gray, blue

Rear speakers - brown, green, gray, blue

Power & Misc - black, yellow, violet, red, orange

Any help with this would be awesome.  The deck is DELCO 89BPZF, Model #21022997 and is dated 6/13/96.  I haven't seen a pic of a '97 Saturn tape deck, but I've seen a pic of a 2000 S-Series (I believe) and it appears to be the same.... although the wiring is color-coded totally different than this one.  Thanks again for any possible help.