Dark rides with post process volumes

So, I've noticed lots of people are trying to create dark rides.
However during the day the the dark ride doesn't work. An easy fix might be to allow
the park creator to create zones in the park that are indoors.

This way the shaders and exposure settings could be changed depending on where you are
in the park. And an added bonus is that at the same time shadows and shadow settings could be
switched to optimize for indoor lighting.

I'm not sure if this is possible at al in the engine the devs are using.
But if its possible I can imagine lots of people using them to create awesome dark and indoor rides.