Mr. Color Thinner (from Gunze Sangyo) will take off, dang near, any paint. Just dip a q-tip in some MCT and wipe away. It's controllable and there's no need to damage the rest of the paint. I've used it on acrylics and laquer and it's never affected the plastic.
Just a word of caution - it stinks, so use plenty of ventilation.
-Fred