Three Friends

There are three friends, Weiss, Schwartzman, and Rotenberg. This trio of friends is special because one of them is blonde, one is ginger (redhead), and one has black hair. One day, the blonde guy said to Schwartzman: "We are a very special trio of friends! Notice that it's not only that the last names of the three of us mean colors, but also that each of our last names does not match his hair color."

What hair color does each of these three people have?

Note: "Schwartzman" means "black man", "Rotenberg" means "red mountain" and "Weiss" means "white" (from Yiddish).