Problem is everything whites have is recessive - so very unlikely to show. The recessive does account for the great variety of eyes, hair, skin, etc - which “diversity” lovers should adore.
it shows up in 2nd, 3rd and 4th generations. My ex wife, the mother of my children was Korean and Philipino. Both boys had dark hair but daughters hair was much lighter. One grandson from youngest son has the pretiest red hair you ever saw.