Youtube to the Rescue, again.

[crazychicknlady]

I love how all it takes is one of the kiddos (S this time) wondering something - in this case, thinking about how hard it must be to paint the faces on the little lego figures (especially the complicated ones like young Obi-Wan Kenobi) - and a short Google search later gives me this.

The part relevant to her question starts at about 2:20 on the video.