Here's a balancing act: It's an example of balancing light.
Usually we speak of balancing the photo flash power with the ambient of background light, so that the picture looks natural.
However, here we have a different task. We are balancing the artificial lighting with the dusk colours in the sky.
Fortunately this is a simpler task, it doesn't involve Guide Numbers or wireless triggers, it is judged by eye and adjusted by time. Simply wait until the fading dusk matches the floodlights perfectly, then take the shot...
The cresent moon is a nice bonus BTW.