Molded from nearly 100 percent recycled materials, Ply Gem’s engineered-slate shingles feature deep shadow lines and chiseled edges. Color schemes include Sagebrush, gray mixed with deep green hues; Brownstone, a subtle mixture of earth-tone colors; Pewter, light and dark slate blends to create a rich gray; and Charcoal, dark gray slate with silver and charcoal shades. Each color is blended with natural slate to produce an authentic look.