Earlier quoted context omitted.
From my understanding facial reconstruction from skulls is a well-defined process in forensics, so it's likely that they used standard methods. They mentioned getting colors (i.e. skin/hair tone) from painting.
I'd love to see facial reconstruction of people of whom we have pictures and video. Since what I've heard of facial reconstruction is that there is a lot "art" in it.
I've noticed that people rarely seem to see much value in testing procedures against questions with known answers.