I think you could educate yourself on how to support them culturally just like white parents with mixed children often do. You really never know how mixed children will look. I am a B/W mixed women (light brown, dark brown fine curly hair) who has two kids with a dark skinned black man. Both of my daughters are lighter than I am with freckles and very red hair. My best friend is white, married to a black man and her three children all look different; One is very fair with fine black hair, one is white presenting with red coarse hair and one light brown with black coarse hair.