Razer BlackWidow Ultimate - One Color, Many Advantages | Tom's Guide Select your Razer keyboard from the device list. You can also select the lighting color for each key individually. From the “Lighting” tab, you can control brightness (or turn the backlight off completely), set energy-saver modes, and select “Quick Effects”.
Select your preferred button and click the “SWITCH LIGHTING” option, then choose a lighting effect to assign. Under the 'LIGHTING' tab, you can change the lighting effect and color of the Razer keyboard to your desired effect.