It’s apparently water soluable so the paint should come off easily. The expensive part is going to be cleaning the engines and external instruments if they need to be cleaned and reccalibrated or recertified. The courts have been handing out serious sentences running into the multiple years so they may have that coming as well.
I’m not aware of any committed activist that was ever deterred by a prison sentence. But they are usually pretty poor so my original point stands.
Well at least they won’t have to worry about feeding, clothing, and housing themselves for a while.