Backpainted glass is my favorite way to get a modern, glossy surface in the shower or bath, and the technique offers limitless color options. Conventional glass is painted on the back side, then adhered to a substrate with adhesives designed for mirror installations or mounted using top and bottom tracks.
Glass gets the green check mark, as it's made of natural materials and is durable, long-lasting and easy to clean with nontoxic cleansers. A large glass panel is another uniform surface without joints, making maintenance minimal.