Ability to see extrusion in drawing pane without changing orientation

[joshusama]

What's the problem this feature will solve?
One cannot reliably see the depth of a defined extrusion without changing orientation

Describe the solution you'd like
The main plate in which something was drawn stay yellow, but the polygon extruded in plates through the Z-plane have a different color (say, blue), and maybe the last plate yet a different color (say, red).

This allows visual confirmation of depth in the plane I'm drawing, which if also analyzing anatomy, could inform whether I should modify that depth. Switching planes is an indicator of sorts, but doesn't help with anatomy for the most part.

Alternative Solutions
Try to make do with the right pane, but polygons don't move with the drawing and extrusions often have visual artifacts

LOW PRIORITY