From the photos that looks like it went through the paint coat and is showing the primer.....
Have you tried to hand rub the area with a polish to see how it reacts?
Plastic will react differently that paint so go easy as its super easy to twist the paint on platic parts, the edges of the grills are also super thin with paint, so watch them.
I would suggest 105 by hand to see, what polishes do you have?
Detailing guru with a touch of class