I bought ColorWell recently and I like it very much and have it now constantly in my menubar.
There is 1 addition to ColorWell that would improve user experience more perfect to me.
The possibility to pick a color directly from the menubar without having to open ColorWell first.
Using a shortcut to activate the color picker would make it perfect for me.
(I refer to color picking like in apps as Sip or ColorSnapper)