I don't think that is for the Sport wheels. A while back someone posted the same question. They ended up hitting a dead end after contacting Subaru for the paint code. You could ask your dealer for the information of the person who does their wheel repairs. You should be able to get it fixed to near perfection for around $100, and they will be able to match the color.
Once Discount Tire damaged one of my wheels when installing tires. They sent the wheel off to the repair facility they use and it was refinished and looked good as new. Another option for you, albeit more expensive.