Metal Coloring Agents/Patina

BlueJacket Shipcrafters, Inc.
160 East Main Street
Searsport, ME 04974
U.S.A.
Tel: 800-448-5567
Fax: 207-548-9974
Link: http://www.bluejacketinc.com
E-mail: nic@bluejacketinc.com
The oldest modeling company in US (since 1905) dealing in everything pertaining to fine scale ship models. 
CPC,Modern Masters Inc.
7340 Greenbush Avenue
North Hollywood, CA 91605
U.S.A.
Markets a series of patinating fluids for blacking non-ferous metal. They also do a fluid that builds a verdigris colour on brass by way of an acidic solution of copper salt.
LIBERON WAXES Ltd
Mountfield Industrial Estate
Learoyd Road
New Romney, Kent
England TN28 8XU
Manufacture a a selenium dioxide based blacking agent for brass,copper and bronze,the fluid is called Tourmaline.