The standard backlight color is an LED white light that can be adjusted between Off and Maximum brightness. The switch light indicator (little blue light) at the center of each switch cannot be shut off.
To change the backlight you open the iotty app on your smartphone and follow the steps below:
1) Tap on the blue (three stacked lines with circle) button on the left at the bottom right of the screen

2) Under your devices select the background of the device you would like to adjust (all of your registered iotty devices will be shown here)

3) To adjust the backlight slide down under 'Plate Settings' to 'Backlight Intensity'

4) You will see a blue bar labeled Backlight Intensity you can adjust it from OFF (no light) to MAX (Maximum brightness). Allow a moment for the action to complete