Working with Markups > Annotations > Halos > To Set Halo Options
  
To Set Halo Options
1. Click File > Options. The Creo Illustrate Options dialog box opens.
2. Next to Showing select Illustration.
3. Select Annotations > Halo. The Annotations-Halo options open.
4. Under Halo, set the following appearance options for the halo effect:
Weight—Type or select a value from 0.5 to 10.0 x Line weight.
* 
The combined width of a leader line and halo may not exceed 10 pixels.
Opacity—Type or select a value from 0 to 100 percent.
Color—Click the color box and set a new halo color in the Choose Color dialog box.
Style—Select the Normal or Short style for halos.
Solid—Select the check box to create a solid halo, or clear the check box to match the halo to the line.
5. Click Apply to apply the settings and continue setting options, or click OK to apply the settings and close the dialog box.