There are no black time lords.

Watch 'The Sound of Drums', then die.

You are all horrible nerds and should be ashamed of yourselves.

And technically, there are no "white" or "black" Timelords, what with regeneration and all. It has been clearly stated on several occasions that the regeneration is random and can even result in gender switch.

Now please excuse me, I need to shave.

"the sound of drums" was a dramatization. I meant there are no black timelords in real life.

http://www.associatedcontent.com/article/8712/does_the_heart_have_ a_memory.html?cat=5