Nissan QX3, Winter Frost, Tri-Coat. Paint Code QX3, Winter Frost, Tri-Coat for Nissan. QX3, Winter Frost, Tri-Coat for Nissan 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.