Fade dark gray with charcoal gray color, some gray clouds fading out, and rough surface looking.. Porcelain slab are available for indoor and outdoor as BBQ countertop, bathrooms, kitchen countertop, flooring, fireplaces, shower wall slabs, steam saunas and more. Heat Resistant, Stain Resistant, Scratch Proof, Easy To Clean, Frost Resistant, Hygienic. Treated With EXCELLENCE.