Color for Groups

I would like to change the color of my groups in Grasshopper to keep them organized and related groups color coded. I am very new to Grasshopper, so there might be an easy fix or a better way that I don’t know about, but when I right click on a group and go to colour I get the RGB colour picker with sliders rather than just some swatches to choose from, which is what I would prefer so I can pick the same colors over and over again, rather than trying to push the sliders to the same values over and over again. So, is there a way to use swatches instead? or is there a way to save the different colors you pick so you can pick them again? the eye dropper tool doesn’t work as I would expect it too, like Photoshop or Zbrush.