How should the separated faces be displayed to the user? I want to group the separated surfaces and give them color and id!
Do you want to colour the geometry within Dynamo or Revit?
If you want to colour the geoemtry in Dynamo you can use “GeometryColor.ByGeometryColor”
Just set a different RGB value for each group
If you want to colour the geometry in Revit, you may use element overrides:
Hope it helps!