Black Hair, Black Eyes *Spoilers all RotE Books*

[redchild]

Brunette is the majority hair color in the human population (dark/brown eyes are also quite common) so I wouldn't say this something that is anomalous. Actually I would be suspicious if more people had coloring like the Fool.. like the Pale Woman or the Black Man.

The only time we ever see how Skill plays a major role in physical appearances are the Elderlings, who by then have no hair and their eyes are distinctly inhuman. Neither does the Wit seem to alter physical appearances (unless you count how you look after living like an animal for a long periods of time!,) despite all the myths and gossip about it.