Display colors are slightly brown tinted.

Okay so I just bought a mid 2012 MacBook Pro non retina to replace my 2011 because I found a decent deal and can sell my old machine for what I paid for the new one. The new unit has a brown tint to the display. This can be minimized by calibrating the display but it is still apparent. Did I get a bum lcd? When doing an expert calibration I ended up with the same settings independently of each other on both machines... I'm at a loss.

edit: if it helps diagnose the problem, when the system with the odd display boots you can actually see it go from normal to brown as it is loading (Apple logo)