wall paint

Converting old print shop into video production classroom

What paint colors would you recommend for the walls?

Currently, it’s an off white and presents a too reflective, too contrasty background. There are also large windows that had been previously painted by a former video teacher but not enough to block the light and they are still an off white. So I need to add another coat of paint on those as well. The room has an incredible number of different temperature light sources including:
Daylight filtered through the painted windows (a few different shades), daylight filtered through frosted glass, daylight coming through a door that is left partially open (can be closed), fluorescent overhead bulbs (which can be turned off), a sky window that is not yet painted, etc.
Teams will need to shoot toward the walls/windows in order to isolate their shoot from other teams/students/teacher stuff. Yes we also shoot in other locations.

I will also be setting up a studio style shoot against different background cloths including black, grey, and green screen. I hope to purchase a Fresnel light kit and maybe some kinos this year, but need to proceed without them for some time to come. I figure the fresnels will be studio temp and will work on getting the outside light blocked.