If you haven't already done that, download Navio2 drivers and examples code here.
Move to the folder with the source code, compile and run the example
cd C++/Examples/LED2 make sudo ./LED
Move to the folder with the code and run the example:
cd Python sudo python LED.py
In this example Navio2 LED changes color every second and outputs the color name to console.
LED is yellow LED is green LED is cyan LED is blue
For further information see source code. You can change LED color using
led.setColor() function, which takes color name as an argument. List of colors defined in