Blueing used in a sentence

Blueing in a sentence as a noun

Winchester primarily sells to the upmarket sector these days: rather than "everyman" rifles, they sell to nostalgic or well-off collectors and hunters who want to have high-quality polished walnut stocks, beautiful blueing of the metal, and even engravings on some models. Somewhat like how muscle cars from the 60s have in some cases appreciated due to baby boomers.