I like this a lot, but picking different colors takes some time. Is it possible, after a right click, to have the colors available form a circle around the pix

I like this a lot, but picking different colors takes some time. Is it possible, after a right click, to have the colors available form a circle around the pixel, and then the user could select a color? The UI change would also allow the user to select black. Just my two cents. Nice work.