Color picker is confusing

[jdcc]

The dot color picker is useful, but its location in the UI is confusing. It's not clear that the swatches are the colors of the node groups, and that changing the color of the swatch changes the color of the group.

Maybe a better location is in the popup that shows up when a user clicks on one of the dots? Then we'd only need one swatch, we can label it, and picking a color there would change the color of the entire group. What do you think?

[chaitanyya]

Need to fix the code for getNodes() first. Existing changes stopped working after I made the code changes.