or
<telerik:RadButton ID="RadButton1" runat="server" Text="Apply" Skin="Windows7" Width="150px" CssClass="ie7buttondist"> <Icon PrimaryIconUrl="~/Images/Apply14.gif" PrimaryIconWidth="14px" PrimaryIconHeight="14px" PrimaryIconLeft="20px" PrimaryPressedIconUrl="~/Images/Apply14.gif" PrimaryHoveredIconUrl="~/Images/Apply14.gif" /> </telerik:RadButton>protected void RadGrid1_ExcelExportCellFormatting(object source, ExcelExportCellFormattingEventArgs e){ GridDataItem item = e.Cell.Parent as GridDataItem; if(item.ItemType == GridItemType.GroupHeader) item.Style["background-color"] = "#FFFF00";}protected void RadGrid1_ExcelExportCellFormatting(object source, ExcelExportCellFormattingEventArgs e){ GridDataItem item = e.Cell.Parent as GridDataItem; if (e.Cell.Text.Contains("Group:")) item.Style["background-color"] = "#FFFF00";}