Requires a Deep Base Paint Recommended Base Paint: Deep Base Interior Flat Wall PaintFor his second collection Le Corbusier defined two shades of umber both of which are very dark and look almost black. The first is 4320J terre d�??ombre brǯl�e the dark almost black burnt shade of umber. And looks stable and dynamic in both light and shadow. Le Corbusier achieved an effect of depth with umber. This very dark shade can camouflage it allows that which should not attract attention to be hidden.