Background color for QTextCharFormat

int main(int argc, char *argv[])
{
	QApplication app(argc, argv);

	QTextDocument doc;
	QTextTableFormat formatTable;
        QTextCursor cursor(&doc);
	formatTable.setCellPadding(10.0);
	QTextTable * pTable = cursor.insertTable(1,1,formatTable);
        QTextTableCell cell = pTable->cellAt(0,0);
	QTextCharFormat format = cell.format(); 
        format.setBackground(Qt::blue);
	cell.setFormat(format);
        cursor.insertText("hello");
	QTextDocumentWriter("test.odt","odf").write(&doc);
        QTextDocumentWriter("test.html","html").write(&doc);

        return 0;
}