rebluing
n.β Β«The police force has since undergone reform in a process called “Re-Bluing”βa term derived from the process of refurbishing a gun barrel and also from the color of the forceβs new digitalized-patterned blue uniforms.Β» ββU.S. forces hand off to Iraqi police” by Richard Tomkins Washington Times (Washington, D.C.) Jan/ 1, 2009. (source: Double-Tongued Dictionary)