They use DecoArt Americana paints. They base the gingerbread people with Terra Cotta and shade with Burnt Sienna. They do the cheeks with Fleshtone and shade them with Shading Flesh. Before you buy paints try to use what you have. Here are links to conversion charts:

http://www.decoart.com/0000/CONVERSI.HTM (DecoArt)

http://www.deltacrafts.com/Literature/CMC_Color_Comp_Chart1.asp (Ceramcoat)

http://www.josonja.com.au/

http://www.tole-expressions.com/reference/index.html

http://paintersworkshop.esmartbiz.com/conversions1.html

http://www.tru-color.com/