I made about 2 dozen dice for my fiancée as a cast gift for a show she was in. 3D printed out of PLA with multi-color printing for the logo inlay ("Save the Game") designed in the slicer. I added a touch of high-gloss black paint to each of the number indents and sanded down to #800 on all sides.
I tried to make the logo recessed down under a few layers of white plastic to give it a depth effect, but it ended up too skinny and hard to read (see the example on the right).
CAD of the dice (final version, the four on the left on the previous picture). The inlay was done in the slicer software and not modeled in CAD.