요즘 Gateron에서 4핀 RGB LED를 지원하는 스위치를 제조하더군요.
https://kbdfans.myshopify.com/products/pre-orderkbdfans-exclusive-gateron-silent-switch-red-brown-blak
https://kbdfans.myshopify.com/products/pre-orderaliaz-silent-switch-tactile
4핀 RGB LED : https://zealpc.net/products/4-pin-rgb-led-through-hole
4핀 RGB LED를 지원하는 PCB는 어디 있나요?