Chrysler PBK, Aero Blue Pearlcoat. Paint Code PBK, Aero Blue Pearlcoat for Chrysler. PBK, Aero Blue Pearlcoat for Chrysler is formulated using R&E Low VOC Urethane Basecoat paint. The R&E Low VOC Urethane Basecoat paint exhibits exceptional color accuracy and excellent coverage and is specifically designed for all Automotive Refinish Applications.