The problem is that a newborn's hair usually changes color when the baby is older.
My daughter had very dark hair when she was born, it gradually became lighter and lighter until by the time she was two it was blonde, stayed blonde until she was about seven, started becoming darker, and is now brown (naturally--although she always colors it), but still not as dark as when she was born. I think you could easily name your little brunette
Daniel and have him turn out a blond.