OE Gas cap

Chrome with black plastic handle is not an OE item. It was an aftermarket replacement. The OE cap was body colour with body colour metal handle. For under $12, you can get another aftermarket cap (Stant 10800 or Gates 31743), which is black-painted metal with a black plastic handle. Disassemble it to remove the aluminum plate with the (inapplicable) warning about fuel spray, paint the black metal the body colour of your car, reinstall the handle, and you'll be a great deal closer to the OE cap.