We supplied these custom grey painted rivets to our customer with 4 other similar grey and brown color.  The customer provided us paint swatches for each color to match and after our initial samples were approved we ran the stainless steel rivets through a strip process prior to painting to eliminate any risk of flaking or cracking of the paint.  The rivets themselves are fully 18-8 stainless steel, measuring 1/8 X .375″, with a grip range of .188″ to .250″.  Lead time for a similar project is typically between 3 and 4 weeks without an expedite request.