A combination of red, green and blue LEDs allow almost any color to be produced.

She rubbed the one around her neck, its green LED blinking every two seconds.

Then you see a tiny green LED indicating that the built-in camera is active.

Start with a green or yellow LED to match the color range of the photosensor.

Usually red, green and blue LEDs are used to get a wide colour range.

They can be added to existing red and green LEDs to produce the impression of white light.

He just was about to use the spray when another green LED lit up, indicating the system had been fooled.

He crouched over the black transmitter box with its rectangular green LED.

The green LED in the front was Bill Scott's idea.

When the tone control is pulled up a set of green LEDs light up within the body.