I found a small bug in the Layers Panel vis-a-vis print color:
By default a layer’s print color changes automatically to match its display color. If you edit the print color, it remains even if you change the display color after, as one would expect. If you right-click the print color and select Restore Default, the print color is set to match the display color, but if you then change the display color, the print color does NOT change to match.
To me: Restore Default should do what the name says: Restore the print color to the default state, which is to always match the display color.