Monkey around much?
Modified my MMM-EasyBack module for MagicMirror. Now you can choose between a static image background and an mp4 file. This is just an example but it is kinda funny, or stupid, depending on your sense of humor, or lack thereof.
Learned a few things during the upgrade. The #id selector for css is fantastic, proving you can teach an old dog new tricks.
I made it work, surprisingly. @cowboysdude made it better.