You can customize the color, length, thickness, and arrowhead appearance of the material orientation plot triad axes. You can also suppress the appearance of one or more of the triad axes.
To customize the triad appearance:
Select Options
Material Orientation from the main menu bar or click 
in the toolbox .
The triad options appear.
Toggle on the buttons to the left of each of the axes to display or suppress them.
Click on the color samples to select the color or colors of your choice for the visible triad axes in the plot.
Click the arrow next to the Length field, and select the axis length of your choice. The default selection is Medium.
Click the arrow next to the Thickness field, and select the axis thickness of your choice.
Click the arrow next to the Arrowhead field, and select the arrowhead design of your choice.
Click Apply to implement your changes.
The material orientation plot triads in the current viewport change to reflect your settings.
Your changes are saved for the duration of the session and will affect all subsequent material orientation plots.
