Well, I did everything wrong, but it survived better than I thought it would. The wristlet was patchwork, medium sized. Some colors bled and tinted some of the other patches. Some of the suede and white jacquard patches didn't come clean with the ivory liquid, so I tried a stronger detergent. That made the metallic finish come off some of the metallic leather patches. I just scrubbed the rest of the metal specks off those patches and the neutral leather looked OK to me. The metal from the hardware stained the white jacquard patches.
When dry, I applied leather moisturizer to EVERYTHING which is NOT recommended but I thought WTH, this is a great piece to experiment on. It didn't seem to hurt anything and made everything softer.
The end result is a Coach patchwork wristlet which is very clean and looks more like a Fossil patchwork wristlet except the white jacquard patches are splotchy-stained. I figure if I get it dirty enough, it should even out the color. Or maybe I should soak the whole thing in tea. (DON'T TRY THIS AT HOME.) Or maybe take a sharpie to that formerly white patch. (KIDDING! Sort of....)
Bottom line is, as much as I used and abused that wristlet, the workmanship is pristine. If I could make the 2 white patches look decent, I could once again carry it proudly. Except that it is too small for me to use as a standalone wristlet since I started carrying the phone. And I'm not really into patchwork these days.
WARNING TO TPFers: Do not take rehab advice from me.