Without knowing what that person's motives are, I'd call that person by his or her name. You're right that it's still discrimination whether it's white or black. Where you and Lithium are wrong is in labeling it racist by definition. Discrimination is racist when it is motivated by animus toward the group being discriminated against. In the absence of animus, it isn't racism. It may still be wrong on principle because merit should be the only thing that matter in a perfect world, but that is another issue. To put it simply: when Obama and each of the past 5 POTUSES who preceded him have hired and/appointed based on race, gender etc. they have done so to gain votes, not because they hate one group or another.
Oh, and btw, I await your allegation of GWHB being "racist" for appointing Clarence Thomas to the SCOTUS in part because he was black. Everyone knows this. Even conservatives didn't deny it at the time.
- wolf