How to replace faulty LED's on a Razer BlackWidow Keyboard - YouTube
Razer BlackWidow V3 (Yellow Switch) - Mechanical Gaming Keyboard (Silent Mechanical Switches, Doubleshot ABS Keycaps, Multi-Function Digital Roller and Media Key, Wrist Rest) US Layout | Black : Amazon.co.uk: PC & Video
How to configure and change the LED lighting color on a Razer keyboard
Wireless Mechanical Gaming Keyboard - Razer BlackWidow V3 Pro | Razer United States