weapon | 氧化铜 sits in the Arctic Collection as a common solid-color finish (so_greyblue_p250). No layered artwork: the whole read is two big swatches—cool blue against rose gold—following the gun’s silhouette. Gunsmith Yukako literally pitched it as a bold color experiment (“tried daring colors—feedback welcome”), so it feels like a test chip more than a flex piece.

What you’re actually buying

• Drop context: Added 31 March 2025 with Spring Forward, bundled into the Arctic set—not a case chase.
• Wear ceiling: 0.0–0.65. Solid colors still shift with float; don’t assume Factory New looks identical to every screenshot.
• Role: Collection filler, Arctic theme stacks, or a cheap way to trial two-tone solids without pattern RNG.

Inspect checklist

1. In-game inspect at the angles you actually hold the P250—blue vs rose gold balance changes with map lighting.
2. Scroll the 0.0–0.65 range in inspect; pick the float band you can live with before filtering listings.
3. On C5GAME or Steam Market, match display name weapon | 氧化铜, Arctic Collection, and internal so_greyblue_p250 so you don’t grab a near-miss solid from the same palette family.

Buying verdict

Worth it if you’re building Arctic-themed loadouts or want a low-rarity solid that reads instantly in the set. Skip or go minimal spend if you only buy high-tier sparkle—this is deliberately plain. Never skip inspect; the sell is the color block pairing, not wear-proof glam.

Editor’s ramble

Common doesn’t mean “ignore wear.” On a two-color solid, scuffs and tone drift show on the big fields faster than on busy skins. Yukako’s “bold palette” line is honest: it’s not trying to win rarity wars—it’s offering a different Arctic mood. Treat it like swatching paint: open inspect, decide your float, then hunt listings—not the other way around.