You can add a black outline, or frame, to markers in a plot. Outlined markers are available at the medium, larger, XL, XXL, and XXXL marker size. See Change the Size of Markers.
To add outlines
1. Right-click a plot or graph.
2. Select Marker Drawing Mode.
3. Select Outlined.
To use an outline effectively, it is best if your marker is a color other than black.
To change marker colors
1. Highlight the markers whose color you want to change.
2. Right-click anywhere in the graph.
3. Select Row Colors.
4. Select a marker color from the options that appear.