While working in solidworks with large assemblies, its not as obvious as I would like when you are working on a part that is checked in or out.

If the part is checked out, what if we could make the background color of the screen change?

Anyone else share this opinion that it isn't obvious enough?  Or have other methods/ideas to make it more obvious when a part is checked out locally/by someone else?

Not with messagebox popups, those are incredibly annoying and are turned off!