Sterile Comet Verdigris

Latin sterilis, barren / not-fertile — sharing root with Greek steiros (barren). As a color modifier, sterile implies a clear-and-medical-clean-and-stripped quality, the crisp color of operating-theater surgical-environment white-and-stainless-steel surfaces. Sits at the crisp-and-clean end of the grid, parallel to sanitary and hygienic in usage.

Greek κομήτης, long-haired-or-tailed-star. As a color modifier, comet implies an icy-and-tailed-and-streaked quality, the visual register of Halley-and-Hale-Bopp-comet hand-icy-and-tailed-and-streaked Halley-and-Hale-Bopp-and-Encke-comet comet-and-icy-and-tailed-and-streaked surfaces under Halley-and-Hale-Bopp-and-Encke-comet sun-grazing-and-coma-and-ion-tail outer-system-arc-light. Sits at the modifier-and-cosmic end of the grid, parallel to meteor and nebula in usage.

The basic copper carbonate that forms on weathered copper and bronze — the pigment scraped from oxidized metal and used in Renaissance painting before being supplanted by more stable greens. The color refers to a thick verdigris on aged copper roofing or the Statue of Liberty's surface: a soft, slightly muted blue-green with the powdery finish of mineral oxide. Cooler than patina, warmer than seafoam, with the archaeological weight of a mineral made by time.