Spray Paint Can

Single aerosol spray-paint can with a coloured cap and a nozzle, a dried paint drip running down the label; colour knob across the kit's graffiti palette; state knob (full with cap on, cap off, crushed empty).

风格：low-poly, flat-shaded vertex colors, no textures, single shared material, so any set of these merges to one draw call; shares palette and scale with its kit