Eventually, a gangling ensign with fair hair, freckles and the reek of the barnyard still upon him showed up with a stack of forms.

A consistent theme in the description of those sightings is possibly blond or fair hair.

But this other idea... "She thrust back the fair hair that fell around her face and for a moment stared broodingly before her.

As the machine lifted, it caught the sun above the forest margins, and burnished the fair hair falling carelessly over her forehead.

She smiled and stepped forward to adjust the coronet, which eased the pressure a little, then she smoothed his fair hair down.