I know how to set the background color in Tools>Options>Colors>Viewport Background. Is it possible to set a different background color for Part & Assembly templates? I am training a several new users, and our company does quite a bit of editing in context. I'm looking for a way to visually indicate which environment (Part or Assembly) they are currently in, since a couple of them are having trouble keeping things straight. It leads to some downstream issues for us because each top-level assembly isn't constructed the same way.

Anybody know if this can be done or some other visual cue I can use to drill into these guys? I've already tried telling them to look for specific icons, file name at the top of the window, etc. I'm not sure what else to use at this point.

Thanks for the help!