Based on a GDU1500, below are a few photos of a replica Garmin 15 Inch MFD unit that we recently finished for a customer who's building a Cessna Citation simulator ...
The buttons are actually backlit in a cool-white, although it's difficult to see that in these photos.
Here's a picture showing the rear of the unit. It has its own USB controller and we also supplied a small program that allows for whichever keypresses are required by the MFD software to be assigned to the correct buttons.
And without the logo ...
