@calinatl if you are looking for ways to change the LED indicator's color programmatically, it's easy to do if you install @jtp10181 's drivers ([DRIVER] Zooz ZEN Switches Advanced (and Dimmers)) and use them instead of the ones bundled with the system.
Then you'll be able to call setLEDMode('On')
to make the LED always on regardless of the state of the switch, and setLED('Red')
to change the color to red.