Need to print your own MMU3 selector plate in a color other than black?
You'll need an M5 T-Nut (flat) and an M5 Festo connector.
Model has a built-in snap-out print-support.
I didn't do this, but you can drill out the Festo connector a little more, also chamfer the input side of the Festo hole (thread side) if you feel / or want a larger input hole.
I printed .4mm nozzle, .2mm layer height with stock MK4 “Quality” profile.
Note: Once installed you can remove the Festo connector to check aligment of the plate with the Selector output hole, see image in the uploaded photos.
The author remixed this model.
Modified original part to allow for use of an M5 T-Nut to secure a Festo connector.