We are currently building a home and all this time I had planned to paint my walls some shade of grey, but we have decided on this floor tile (Cerdomus Club Grey) and now I am wondering if grey walls would be a mistake? I currently have tannish brown walls and I am so over them, so the idea of doing them in my new home drives me crazy. Thoughts? My interior design will be mostly rustic/coastal with dusty pastel colors.