Paint it black?

Am slowly painting the lead mountain of abandoned projects... Ancients of various denominations from NewLine.

While painting some 'wild germans' I have started to paint the naked figures with there mostly wicker shields and realised I may have gotten it wrong, and my google foo has failed to back up my thoughts.

So would it be right to paint the unclothed figures as caucasian flesh... With blonde hair...
Or with a black block 'tattoo' over arms or torsos etc .. Still blonde? Or a mix of gingers n brown hair....?

Is this historical or just me going all Conan?

Please reminder these are destined for sale so getting it wrong will effect future purchases :(

Many thanks all

Shaun