Most unique KITCHEN SINK you can ask for. Different colors can be ordered as shown on the wall display. Colors : Stainless Steel GunMetal Copper Brass. PVD coating is an innovation in the creation of coloured stainless steel making the surface significantly harder and more durable in the process. This is produced through the process of PVD (Physical Vapour Deposition) Titanium Ion Plating which improves the performance of stainless steel by increasing wear scratch and corrosion resistance making its durability far superior to conventional coating methods such as electroplating or powder-coating. The PVD process is also more environmentally friendly than processes such as electroplating and painting with zero discharge of gas water waste or other residue.