PN RBC-VDU-77 · PHOSPHOR TUBE + LUMEN COIL
PHOSPHOR TUBE RACK — SEAT ONE TUBE:
> TUBE SEATED: ROBCO GREEN (DEFAULT) · GREEN CARTRIDGE LATCHED
MOCKUP ONLY — in the real build every tube routes through the unchanged changeOpticsColor(themeKey) / window.THEMES wiring with per-game persistence (robco_optic_<ctx>); the green cartridge is pure presentation over the existing green / green3 / ghoul keys. All motion is plain CSS animation, neutralized to a static final frame by the app's global prefers-reduced-motion block.