I'm not leasing my car either, but as it turns out, my car is going back anyway. Why? Can't make the payments with a devastating turn of events in my life. This CAN happen to anyone, and with our economy in the peril it is in, you've got to pay heed to that. If you paint your car satin, AND you have to end up getting it repossessed (truly worst-case scenario, but it COULD happen just like its happening to me), then your car will be worth about NOTHING on the auction block. Nobody there will actually want to own it, because it didn't come stock that way. Come on, you know the rules. You modify a bought-and-paid-for-in-full car this way because you can, but a car you're making payments on....its not really yours until you make the last payment. This is True.
Now, if this were a $2000-$3000 project car (like my Supras were), hell I'd be all over it with you. I thought a flat/satin black paint job on my 91 Supra would look killer, I just never got around to doing it.