Again, you must have a bad unit and should have exchanged it. I have a D4 and. D800E and there is absaolutely NO green cast on the LCD or the images taken by either camera.
Perhaps.
But who am I going to believe here? A well know working professional photographer with decades of experience or an anonymous Nikon shooter hanging around in the Canon forums attempting to defend a brand?
The situation here is, quite frankly, illuminating - particularly as the pro's opinion has been reported independently elsewhere too. ;-)
Perhaps the rose coloured glasses help balance the yellow-green a bit? :-D