Greenscreen export/printing toggle options

It would be useful to be able to print out our maps with three different toggleable greenscreen options.
1) Change out the terrain with greenscreen so that we can still see all of the shadows and plants. This will allow us to use a wider variety of terrain textures.
2) Change out the floors with greenscreen. This will allow us to change out the flooring while keeping objects and shadows.
3) Change out walls with greenscreen. This would allow adding special effects like adding a dark shadow along the walls so that we can make the walls pop out more in the map.
These greenscrens can also work as selection masks in case we just want to make the walls or floors lighter or darker in color.
It is better to just have a toggle option that only impacts the export/print out so that we do not have to manually change all walls, floors, terrain manually.