Changing the Thickness of Centerline Objects

To change the properties of the line art, select the line art you want to affect and adjust the line size in the Pen tab or change the line color using the swatches in the Color Palette tab.

You can use the Pen and Color Palette tabs to make the following types of changes:

To change the color of a line or color region, click the Select tool, select the line or region, and select a swatch from the Properties window’s Color Palette tab.
To change the width of lines, use the Select tool to select the object and adjust the sliders on the Pen tab.