...the Red Court weren't specifically depicted as non-white. Paolo Ortega was specifically noted to have been one of the Conquistadors, Martin [the half-vampire who worked with Susan] was noted to be white. It's noted that the Red Court primarily operated in Latin America, but not that they're all Latino. Not that race is a relevant term to use discussing them anyway, because their human forms are simply how they choose to appear - they're actually bat-looking creatures.