My recollection of VA is that classes in other packages show up as a lighter grey colour, if you choose to see the full hierarchy (I think dolphin and ow do something similar too)

I guess what threw me was the hierarchy button in pharo just shows what I want for a single class and not for all classes in the selected package at the same time. (Which would make learning new packages a bit easier).

Maybe it's something I can easily adjust myself. Or something to consider for Calypso.