Using some acrylic paint, I was able to paint four of the arcade buttons in different colours. In the first article I described a test I did using minature-model paint, and I can say that the acrylic paint covers a lot better. Depending on the colour, I did 2-3 layers of paint.
At the moment, my plan is to make a box with the layout as following:
I’ll have to think some more about which material(s) to use for the housing, stay tuned!