Revit 二次开发 修改对象的颜色

//修改对象颜色

[TransactionAttribute(Autodesk.Revit.Attributes.TransactionMode.Manual)]

public class ChangeColor : IExternalCommand

{
public Result Execute(ExternalCommandData commandData, ref string messages, ElementSet elements)

    {

          ChangeElementColor(commandData, elements);

           return Result.Succeeded;

    }
public void ChangeElementColor(ExternalCommandData   commandData, ElementSet elements)

    {

        UIApplication app = commandData.Application;

        Document doc = app.ActiveUIDocument.Document;
ElementId el = new ElementId(729401);
Transaction trans = new Transaction(doc);

        trans.Start("ChangeColor");
Color color = new Color((byte)255, (byte)0, (byte)0);

        OverrideGraphicSettings ogs = new OverrideGraphicSettings();

        //设置ElementId为729401的Element的颜色

        ogs.SetProjectionLineColor(color);//投影表面线的颜色

        ogs.SetCutFillColor(color);//切割面填充颜色

        Autodesk.Revit.DB.View view = doc.ActiveView;

        view.SetElementOverrides(el, ogs);
trans.Commit();

     }

}                

Revit 二次开发 修改对象的颜色