If it is a dealer supplied paint it would be a point hit. NCRS judges based on as delivered from the factory. The center of the wheels that I have and have seen are turned on a lathe. The depressions around the center are a light gray paint, before the wheel is turned.
Not sure about point hit. I would think the most might be around 20% of the originality points. Condition points would be another question.
Frankly, I would not worry about the point hit since the cost to restore is significantly higher than the point deduct. I'd work on repair of other less costly fixes. I had a 1990 rim restored a number of years ago, if memory serves the cost was about $300 per rim. Probabily a lot more now, especiall the wider rear rims.
