"But beyond, in the great fief of Belfalas dwealt Prince Imrahil in his Castle of Dol Amroth by the sea, and he was of high blood, and his folk also, tall men and proud, with sea-grey eyes!" --Return of the King
"...and last and proudest, Imrahil, of Dol Amroth, kinsman of the Lord, bearing guilded banners bearing his token of the Ship and Silver Swan, and a company of Knights in full harness, riding grey horses: and behind them seven hundreds of men-at-arms, tall as lords, grey-eyed, dark-haired, singing as they came!" --Return of the King
This is why mom loved Dad. Or it could be that he cut a dashing figure on horse.