I find it strange that anyone would think Starfire should be white, and it just shows how people can be blinded by the assumption of whiteness as the default. As George Perez drew the character, her facial features looked to me like they could easily be black or biracial. And despite the odd tendency these days to describe her skin color as "orange," she was always explicitly called gold-skinned in Marv Wolfman's dialogue, and her skin tone always struck me as a sort of golden brown. Although it's telling that all the people who complain about casting black actors on the grounds that it's "inauthentic" never complain about all the brown-haired white actors who've played the redheaded Jimmy Olsen or the blond Barry Allen. They couldn't care less about authenticity, they're just bigots.