Да, по мнению госдепа США, славяне относятся к цветным. Ссылку на источник поищу, прочитал на гансру. Так что Гермиона может быть и русской, и полькой.

https://www.portlandoregon.gov/oehr/article/713232 на второй странице

It is a little unusual to consider the Slavic community as a community of color, for conventionally the
community is considered White, and in all databases reviewed for this research, the community is
included within the White community. So why this variation? The Slavic community has arrived in this
part of the USA facing similar forms of discrimination and exclusion as did the Polish, Irish and Italians
many generations ago. These communities struggled with language, employment, education and social
exclusion. In much the same way, the Slavic community faces these barriers to parity and to equity. As a
result, the Coalition of Communities of Color has formally recognized the Slavic community as a
community of color. The experiences of the Slavic community have much solidarity with other
communities of color.