I have one of mine scratched and my Lexus dealer said one of the people that come in can fix it like new! I just haven't been back on a Thursday when he is in
. They have 3 different vendors; one touches up paint, one removes dings and repairs wheels and another that specializes in interior/leather repair and matching!!
I mixed BMW Jet Black with the BMW silver rim paint to touch up a ding on my Superchrome rim; not perfect, but you need to know the scratch was there to notice it. Definitely much better than how shiny the rim was when it got scratched.
You can touch it up; I understand from a body shop that the wheel (inside) will have the Lexus part number and the paint code used. But in time you'll probably just forget that he wheel was curbed, even if you don't touch it up.
But if you want it like new, you'd need to have a wheel repair place fix it off the the car. If new material was need that would be welded onto the wheel, then shaped, trued and power coated. You'd have the wheel in back to new condition, and that's what you might really want on your new car. That's shoudl be the aim of any car repair - to put it in like new condition.
I'm in the process of getting my wheels redone, for about $650 for all four wheels. I was quoted about $2000 from the same place for just powder coating about four years ago! Prices have come down a lot it seems.
Maybe you'd want to change the color of your wheels if you decide to get all traces of the rash removed. The Prismatic Powders web site has a huge display of their colors.
I had the same Issue with my Certified PreOwned 2010 ES 350. After much aggravation with the Car Rims looking like Your Car, I went to a Lexus Dealer ( Purchased from) and the Service Manager had them Repair it for around $ 50.00. Let them Repair it...it looks like New again !