Wouldn't a holographic display hide covered parts - it would be like a semitransparent variant of the normal render (maybe single color).
For now it looks as if you render each polygon with some semitransparency - and then render other semitransparent polygons on top - so colors "add" (see the "fighter" which gets more and more bright).
In explosion drawings (CAD) this is correct for "components" - yours is done on polygon (or triangle) base instead of components.
Dunno if the normal player even cares of this difference - just wanted to give you something to tinker with

bye
Ron