It would require an extra image, even just as an overlay colour, to be drawn behind the foreground, though with its position offset depending on the rotation of the game. The only other way I could think of was to have 4 different textured backgrounds to be drawn to each rotation (Enum and Switch in the Draw methods). But that would require a lot more art so I guess it wouldnt be worth it.
'Blocks that Matter' is kinda what it reminded me of, player would stand in-between the foreground and background image like he was walking on a perspective surface.
