I kerbed the nsf wheel on my Merc a few months before the lease ran out, and I didn't want to pay £££ for a refurb, just to kerb it again, so I spent £12 on a diy "refurb" kit, car model specific, via eBay.
It contained small pieces of 4 grades of wet and dry paper, a filler paint, a colour paint, and a lacquer. I had read not to use the brushes inside the bottles of paint, but to use a decent artist's brush.
I took care over the repair, and while I could see it, no one else, including the two lease company inspectors, if they noticed, said a word.
So, particularly if I knew I wasn't keeping the car for ever, I'd try this first, before shelling out on professional refurb