The following Add-In allows users to easily color code rows of a data table using a data filter. As you decide on selection conditions and colors a legend will populate, which you can save to the data table upon completion of your table coloring.

You will notice that the tool also adds functionality to remove colors from the table/legend retroactively attempting to restore a previous coloring if possible.
I noticed that JMP did not make if very easy to color rows, so this tool was developed to make the process easier and more intuitive.