To change the color of the lines that represent memory and swap usage in the graph, perform the following steps:
Select the Resource Monitor tab in the System Monitor window, to display the graphs and table that provide information about the usage of system resources.
Click on the Used memory or Used swap button. The Pick a color dialog is displayed.
Choose a color from the Palette, or use the color wheel or the spin boxes to customize the color.
Click OK to close the Pick a color dialog.
