public interface ExportBGColor ListGrid.exportData() or ListGrid.exportClientData(). The following APIs are called in the order shown, so hilite.backgroundColor takes precedence over exportDefaultBGColor, for example. If overriding any of the above methods, return null to allow methods later in the precedence order to influence background color. For example, if you want certain rows to have a special background color but also want to show alternating colors per row, override getExportRowBGColor and return null for all rows that should just show normal alternating colors, and not a special color.