Blondes seem to many to be light, open, sunny. Maybe it is because of stereotypes, or maybe because of the way the light plays on light hair. Brunettes are often associated with depth, restraint, sometimes with mystery. Redheads are fire, energy, independence. And girls with unusual colors - blue, pink, purple - are like a separate world, bold and self-expressive.
But if you look deeper, color is just a shell. It is important who is behind it. What kind of smile does she have, how does she speak, does she know how to listen, support, be real. There are moments when a person just glows from the inside and you no longer remember what color his hair is.
So, maybe the right answer is no matter what color. The main thing is to have someone with whom it is interesting, calm and easy. And hair, they can always be different.