Textured wall treatments like beadboard, wood paneling, or stone veneer add depth and memory to a space by casting fine shadows and creating tactile interest. These textures can soften harsh lighting by diffusing reflections and add warmth through natural materials. While texture enriches a room's coziness and character, it can also absorb light, requiring balanced layered lighting to keep rooms bright. Choose a texture that suits the room's function and desired atmosphere for best results.