Dryvit's Lymestone PMR Mildew-Resistant Accent Finish is a premixed 100% acrylic based coating and is offered in standard colors as well as custom colors. Lymestone finish is designed to replicate the appearance of limestone blocks. Lymestone provides the finishing touch that adds lasting color and texture to exterior and interior walls. Lymestone finish with DPR (dirt pickup resistant) chemistry will remain cleaner longer after application.