How are Blond Men like Unicorns?

The book I'm working on right now has a blond hero.

Those of you who have read The Season will remember that my very first hero--the boy of my heart, Gavin, Lord Blackmoor--is a blond.  And he's charming and funny and based, loosely, on a collection of boys who I grew up with (and one whom I married), who were all blondes. 
But this time, I'm writing about a man.  And he's golden-haired and beautiful and all man.  But here's the thing: There aren't that many gorgeous, manly blonds out there...