Keyboard Backlight

Hello, I own a razer blackwidow and I would like to know if I can control the backlight of my keyboard using my arduino uno or mega.

P.S I don’t want to connect my arduino directly to my keyboard. The keyboard is connected the my pc.

Excuse my english

You can send serial data from the Arduino to the PC, and then use PC software to receive it and control the backlight (so the main problem is mainly an PC programming problem). Do you have any API for the backlight?

There is a software by razer named synapse that allow me to control the backlight of my keyboard.