A dark brown or gray color will provide opaque coverage to mask dirt, grime, and mold, while a silicone caulk's waterproof and mold-resistant formula is designed to provide a reliable seal without ...

"Darker caulk colors, such as gray and brown, are better at hiding grime and mold," Garvey says. He explains that darker shades of caulk naturally mask dirt, and that makes them ideal for high-use ...