Change the colors for the connection arrows used in the Route and Fill tool for different views. 
Specify one color for the connection arrow that displays in a plan view. Specify other colors for the connection arrows that display in a 3D view to indicate the direction of the route. 
- Click Systems tab
Fabrication panel
. 
	 Tip: If the MEP Fabrication Parts palette is visible, you can also click the Settings button to open the dialog. 
	 
 
   
- Click the Connection Indicators tab.
  
 
- Select a color for the Plan setting to control the color of the arrow that displays in plan view. 
  
 
- Select a color for the Towards and Away settings to control the colors of the arrows that display in a 3D view.