I think I’ve mentioned this in the past. But rubbing a vinyl toy with vinyl paint thinner or any paint removing chemical like acetone causes damage to the toy often leaving the surface covered in micro holes. Granted they probably aren’t overly noticeable, but they bug the shit out of me. I would recommend using an acrylic paint for rubs, and washing the paint away with just water. Then use a heat gun to set the the acrylic and clear coat it when dry. This technique will also allow you to put a rub down on top of an area already painted with vinyl paint because the water won’t rub away the vinyl paint.