To add an option to the Assign Color By list

1. In the Project Setup tree view, expand Plant 3D DWG Settings.
2. Continue to expand the list until you locate and click Pipe Run Component.
3. On the Class Settings pane, under Properties, click Add.
4. In the Add Property dialog box, do the following;
   • Under Property Name, enter a name for the new property (for example: SpecNew). The name cannot contain spaces.
   • Under Display Name, enter the name that you want displayed for the new property in the Data Manager or Properties palette (for example: SpecNew).
   • Under Choose a Type, click Selection List.
   
5. Click OK.
6. In the Selection List Property dialog box, click New Selection List.
7. In the Add Selection List dialog box, enter the name for the new selection list (for example: Spec). Click OK.
8. In the Selection List Property dialog box, click Add Row.
9. In the Add Row dialog box, enter the new value (for example: CS300) and a description of the value, if necessary.
10. Continue adding rows until the selection list is complete.
11. Click OK.
12. In the Setup tree view, expand Plant 3D DWG Settings. Click Layer and Color Settings.
13. On the Automated Layer And Color Assignment pane, in the Assign Color By list, click the new item.