How to turn off numlock led without turning off numlock in Windows?

My redgear keyboard has a very bright numlock, capslock and scrolllock led. How to turn it off, while keeping the keys active ?

I have used sharp keys and hot keys, but changing registry doesn't works, any other key is not working as numlock and vice versa. These lights are really irritating at night, is there any way to solve this?

You can take the complex option of opening the keyboard and replacing the LED or adding circuitry to decrease the voltage going to it, or the simple option of covering over the LED with marker or tape.

Blackout stickers help cover the NumLock light (you can get them at Amazon); you could also use duct or black electrical tape.