If its an overspray (fine mist like paint) you can use clay bar to take it out. Believe me its not 10 min job but very safe and effective. :) Follow instructions of the clay bar if using for the first time.
See if you can get some color to the card, maybe a red car or something (kinda like the Autogeek banner car).
or...
or
*just some samples i got of google *
Well it might come out when too much pressure is applied but if done slowly it should be fine. I have similar problem, i got lots of paint chips and will fill those with my pain followed by 2000-3000 grit sand paper to level the surface and will hit it with polish and wax after.
I would...