Example of varying textures. Black, grey and white palette looks elegant - love the detail on wainscoting! Mixture of patterns on sofa and large silver jars add more texture. Grasscloth wallpaper brings in nature and even more texture!
dark walls dark sofa, consider your furniture colors when selecting a wall color. This sofa blends into the walls even though it's a bluer/cooler gray than the walls. More contrast in the colors would set off the sofa.