Don't give up yet.
Try on a Q-tip just dabbing at one spot to see if it will soften and lift off:
peroxide
alcohol
Goof-off
Oxy-clean
Amway prewash is the best. I have used it for years until I ran out recently and have not reordered yet.
You will have to make sure the surrounding areas that do not have paint on them don't get wet or the paint could literally run into those spots. And definitely stay away from heat of any sort. Work slowly and methodically. It may take several days of dabbing and maybe even soaking just those areas.
Good luck.