When does black make white?

You probably already know that too much black can make (some of) you look pale. But have you considered what it can do to your hair?

Have a look at Rep. Tammy Baldwin in her office last week:

In this case, her face actually doesn't look that pale. But look at her hair: what is usually a nice sunny blond now looks....white. This was the unintended consequence of a lot of black and overhead lighting. Blonds beware!