if its acrylic paint or urethane paint chances are it won't come of kahit clay... kasi the thinners in the paint may have "eaten" thru the plastic already. and you all know what happens with plastic + thinners.

happened to my hi-ace we clayed it and malabo pa rin yung plastic covering the cluster panel. di na naalis ng clay yung over spray. mine was over sprayed with dark blue