I figured I'd start this thread since the BtNY season love is being spread right now, and because I wanted to answer a Coral specific question from another thread and want to make sure it's in the right thread.
Coral's ethnic background is Creole (as stated on her application in the RW BtNY book). So yes, she is black, but being of Creole ethnicity, she has some mixture of French, Spanish, African, and Indian races blended in (Beyonce is also someone of Creole descent, from her mom's side).