Color changing shells are Thermochromic which means they change color based on the temperature, ie; below 77f the controller will begin turning Gray, at or above 77f the controller will turn Yellow.

Shell comes with new self tapping screws, please do not use the original screws, or overtighten the hardware, as either will strip the screw posts.
Hand cast NES controller shell, does NOT include buttons. Items are made by hand, and therefore may have minor cosmetic issues. Due to the current pandemic please allow up to one business week for items to be shipped.

NES Controlller - Color changing Gray -> Yellow