I restored extremely yellowed Dualshock controller for my PSone --- AF invention

I restored this PSone controller for my PSone console. This is the PSone version of dual shock. It's an updated version of the original dualshock with some minor differences. It was released for the PSone. It is not the same as dualshock 2 (Playstation 2 controller) either. It was released almost exactly 20 years ago. The controller is very yellow and and dirty but it works fine. The thumbsticks are also broken so they need to be changed.