My ex was very fair-skinned. She both loved and hated my convertible - she loved cruising at 100mph with the top down, but had to wear a scarf or big hat tied down or she'd get completely burned to a crisp, which was bad for one of her other favorite pass-times: hanging out in the pool. She'd easily go all "rock lobster" while I'd tan nicely - not her favorite thing about me.
Couple of each - the HS GF and her mom are more "red", while the cousins are more "ginger".
Scarlett is natural blonde - she dyed her hair when she was younger to be just like the cousins, but that wasn't her natural look.
And if you want red-head heavy, once My New Memories gets back on track, most of the new family members will be red/ginger - there's a set of twins in that group, as well.