OS X :: Mac Color Picker White Instead Of Black?

I'll start off with a screenshot.I'm specifically talking about the bar on the right hand side, that slides from the red I chose to black.Is there anyway I could have that same sliding-type bar, only sliding from red to white? Is there anyway I could have them both up at the same time? (So I'd have two different sliding bars, one going to the black and one going to the white) (Or actually, even if they could be combined... that would be sweet too. So the sliding bar looks like ms paints sliding bar, basically white, color you have, black)If I'm a little bit too confusing please respond with your question and I'll try to explain it a little bit more.