Coloring JTable rows depending on the actual and previous value

Question

I need to change the background of the entire row of a JTable, but with the condintion of checking the value (Integer) in the column 0 of each row.
I the actual value is equal to previous value I keep the same color (any color) if it is different I must change the color (to any other color).
Any ideas how I could do that? I suppose I cant use CellRenderer because the Table is already full, so I was thinking about making a looping thru the table and chaning the background colors, but I have no idea how to do that.
So far I have this code:
int totalRows = modProdutos.getRowCount();
int totalCols = modProdutos.getColumnCount();
System.out.println("Total rows: " + totalRows);
TableColumnModel tcm = tbProdutos.getColumnModel();
DefaultTableModel modelo = (DefaultTableModel) tbProdutos.getModel();
if (totalRows > 0) {
    int numeroOSAntes = (Integer) tbProdutos.getValueAt(0, 0);
    for (int i = 0; i < totalRows; i++) {
        int numeroOS = (Integer) tbProdutos.getValueAt(i, 0);
        if (numeroOS == numeroOSAntes) {
            // Paint the background with the same color (any color)
            System.out.println("Same Color: " + numeroOSAntes + " - " + numeroOS);
        } else {
            // Paint the background with a different color (any other color)
            System.out.println("Different color: " + numeroOSAntes + " - " + numeroOS);
        // keep the previous control number
        numeroOSAntes = numeroOS;
}

Answer 1

        jTable1 = new JTable(0,4){
            @Override
            public Component prepareRenderer(TableCellRenderer renderer, int row, int column) {
                Component c = super.prepareRenderer(renderer, row, column);
                c.setBackground(Color.YELLOW);
                boolean yellow = true;
                for (int i = 1; i <= row; i++) {
                    if(!getValueAt(i,0).toString().equals(getValueAt(i-1,0).toString())){
                        yellow = !yellow;
                if(!yellow){
                    c.setBackground(Color.WHITE);
                return c;
        model = (DefaultTableModel)jTable1.getModel();
        model.addTableModelListener(new TableModelListener() {
            public void tableChanged(TableModelEvent e) {
                jTable1.repaint();
        });