Allow it to be repositionable. Right now, it pops up directly above the swatch you click on, and it can't be moved. If the swatch happens to be in a CSS rule in the Styles tab, the color picker blocks the workspace, and often covers a part of the website from which I'm trying to sample a color.
+1 and I would say that for most anything that pops up if it's stationary.
Thanks for the suggestion! We'll try implementing this in the upcoming release if time permits.