Nice tool, although the way the colors are displayed can distort perception. Always remember to test and pick colors in context. If you are using a white background, don't pick colors in a black app, and vice versa.
Displaying them all in a column like that emphasizes the value variations. Which is the point, of course. It's just that there is a segment of the population that always acts shocked to discover that the three colors they picked look different put together, than they do alone.
