Grunge-style propeller beanie cap inspired by a classic multicolor toy hat. Keep the yellow, red, blue, and green panel layout, but make the fabric worn, faded, and dirty with frayed stitching. Add scuffs, scratches, and distressed textures across the brim and panels. The propeller on top should look slightly bent, chipped, and weathered plastic. Overall aesthetic: urban grime, early-2000s street-punk vibe, muted colors, rough materials, and realistic shading.