You can assign any color to highlighted markers on a JMP graph. In the associated data table, the color appears next to the row number in the data grid.
To change the color of markers (or points) on a graph:
1. Highlight one or more markers whose color you would like to change.
2. Right-click anywhere in a graph. In a histogram, right-click the box plot area on the right.
3. Select Row Colors.
4. Select one of the colors, or click Custom to apply a custom color.