I tore apart a switch to see if it could be done and took it to a custom interior place who's worked on LED lighting and he said it would be very difficult to do. Tear apart a switch and you'll see how the LED is held in place, not very easy to work with. He told me for it to work, he'd need the car for a long time and there still wasn't a guarantee. The only one that could be changed easily is the one behind the HVAC.

Not saying it can't be done but defintely a challenge