Rub anything hard enough and something will come off if it's plated... Nope never heard that one, and I just assisted on an owners black Z06. Poor guy didn't have half the product needed to get all the swirls out or pads, so let him use the DACP/Yellow finger pad, then 3M PIII-MG, then HP on finish pad. Washed, Zaino'd and nice and black!
Now, if I can only get him to top it with some of my Souveran Paste!
Regards,
Deanski