I love the dark hair too!
My first ds had light brown hair and blue eyes, then he turned into a green-eyed blondie. The other 2 were born with red hair that went blond, and they both have blue eyes.
Neither my DH nor I have blond hair or blue eyes!
His name is pronounced pretty much as it is spelled. Sort of rhymes with "man" - but the "a" is softer, somewhere between the "a" in man and "ah", and the 2 "n"s are pronounced, if that makes sense. It is the French/ celtic version of Jean that is mainly used in Brittany.