C# revit 二次开发 创建线样式LineStyle

private Category CreateNewLineType(Document doc)        {            Category lineCategory = doc.Settings.Categories.get_Item(BuiltInCategory.OST_Lines);            Category newCategory = doc.Settings.Categories.NewSubcategory(lineCategory, "newLine");            Color newColor = new Color(255,255,0);            newCategory.LineColor = newColor;            return newCategory;        }