Halo Codex on Twitter: "Does anyone know why the Katana in Halo 3 is now black? The red and gold color was like that because it was a reference to Tecmo's Ninja
The Katana chest can't be used in Halo 3 anymore. While there'll no doubt be comments pretending that I'm the only person experiencing this bug, I'm posting it here anyway. : r/halo
Reference Thread: Halo 3 Mjolnir Hayabusa Helmet w/ Armor and Katana | Halo Costume and Prop Maker Community - 405th
Halo 3 Spartan Hayabusa Katana Armor Model | 3D Warehouse
I made the Halo 3 Katana into a Melee Weapon! - YouTube