change only the roof material to premium matte anthracite roof tiles ral 7016 anthracite grey while preserving the existing roof geometry pitch ridge eaves overhangs and all architectural details exactly as designed the roof should feature high end contemporary flat concrete or ceramic roof tiles with crisp definition realistic joints subtle color variation and high resolution pbr textures for a refined luxury appearance do not change the roof shape or proportions additionally enhance the overall luxury feel of the house by improving the realism and quality of all existing materials only keep every material exactly the same but upgrade them with ultra high resolution textures realistic depth physically accurate pbr materials refined roughness subtle surface imperfections richer natural colors enhanced contrast sharper details realistic reflections and premium architectural finishes the result should look like a luxury custom built residence photographed by a professional architectural photographer while preserving the original design exactly
