I've now had two professionals tell me that color sanding is the way to go. I'd post pictures if I thought it would help, but you won't get the detail that's necessary. You have to put your finger on it and see how deep it is to believe it.
The detailer was impressed with the little bit of wet sanding I did on the door. I might try 2000 grit and see if I still get some good results.
Unfortunately I took the advice from the guy at the hardware store and used the 1500 grit on the window. The scratching is very light, and I might be able to polish and buff it out. I'm going to get a second opinion from another detailer since I don't want to color sand paint that is on the top side of the car, it's already pretty thin. This is a single stage paint job in Orient red.

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'81 300SD