Unconnected topology in different colors in wireframe

With fantastic new options to one tap select connected topology, one can simple merge multiple objects and sculpt as one object. But a visible indicator would be great to quickly identify elements when in wireframe mode.
Something like coloured Polygroups in zBrush but with a tiny take of Stéphane GINIER elegance?

This could take workflows to a new level in Nomad.
Just think Split, mask split, simple merge, separate.

Something like this:

Left and right is same sphere split and simple merged and sculpted on after like one object.
Or that? Now we are close to known stuff.

Well, above is to easy as masking should work like this. But the direction is obvious