Unable to apply formatting for HeaderRow

 private void RadGridView1_RowFormatting(object sender, RowFormattingEventArgs e)
        {
            try
            {
                if ((string)e.RowElement.RowInfo.Tag == "new row")
                {
                    e.RowElement.DrawFill = true;
                    e.RowElement.BackColor = System.Drawing.Color.LightCyan;
                    e.RowElement.ForeColor = System.Drawing.Color.Black;
                    e.RowElement.Text = "New";
                    e.RowElement.TextAlignment = System.Drawing.ContentAlignment.TopLeft;
                }
                else if (e.RowElement is GridTableHeaderRowElement)
                {
                    e.RowElement.DrawFill = true;
                    e.RowElement.BackColor = System.Drawing.Color.Navy;
                    e.RowElement.NumberOfColors = 1;
                    e.RowElement.ForeColor = System.Drawing.Color.White;
                    e.RowElement.Text = "";
                }
                else
                {
                    e.RowElement.ResetValue(LightVisualElement.DrawFillProperty, Telerik.WinControls.ValueResetFlags.Local);
                    e.RowElement.ResetValue(LightVisualElement.BackColorProperty, Telerik.WinControls.ValueResetFlags.Local);
                    e.RowElement.ResetValue(LightVisualElement.NumberOfColorsProperty, Telerik.WinControls.ValueResetFlags.Local);
                    e.RowElement.ResetValue(LightVisualElement.ForeColorProperty, Telerik.WinControls.ValueResetFlags.Local);
                    e.RowElement.Text = "";
                }
            }
            catch (Exception ex)
            {
                MessageBox.Show($"Uncaught error in {System.Reflection.MethodBase.GetCurrentMethod().Name}: {ex.Message}");
            }
        }