Invert BLF LED

Hi,

I am experimenting with the BLFs and trying to reverse the behavior of one of them. Currently, I have a BLF that allows me to call a colleague and shows the status of the colleague on his phone through the LED. By default, the LED lights up when the colleague is absent (DND is on) and turns off when the colleague is online (e.g., DND is not active). I want to change it so that the LED lights up when the colleague is online / DND is not active (which would be more logical since the LED is green).

We both have a snom D710 and are using freepbx.

How can I achieve this? Any help would be greatly appreciated.

Thank you.