For the entirety of its 92-season history, Michigan Stadium's field has looked like some variation of this:
Moving forward, it will now look like this:
In case the change wasn't obvious to you, the Big House has changed the stripes of its end zones, from turf-colored to maize.
(Above photo via Michael Zordich)
It's a good look; maize and blue is all but impossible to screw up, though it would have been nice to see a mock up of how blue-on-maize would have looked.
So there you have it. The Big House used to have green end zones. Now it has blue end zones.