I have the same harness. It took 2 warranty claims before I got one where the paint wasn't cracked. Considering the cost of the harness I wasn't going to accept a damaged product straight out of the shop.
It's now very cracked.
I would suggest you forget about it. The paint goes under the rubber edge that is sewn into the carbon. You won't be able to get under there to remove the paint. Anything you do is going to damage the underlying structure.
It's a fantastic harness. I will gladly buy another when this one dies. I just decided to think of the paint cracks as battle scars or tribal tattoos on a seasoned warrior. I feel properly armed for battle when I walk down the beach wearing my paint cracked harness cinched around my powerful torso, board under my arm, kite held in the breeze by my muscular arm, women shyly glancing at my toned physique.
PS If you carefully wet sand it you'll get rid of the paint. You can then polish it, or paint it with epoxy clear coat. Be careful. There is a great risk of sanding through the epoxy into the carbon. That would be a disaster on a structural carbon component. Probably just ugly on a harness shell.