CellRenderer em DefaultTableModel com netbeans

Amigos não sei como colorir linhas da tabela forma que seja linha branca linha cinza agradeço a ajuda de todos desde já.

package br.com.mg3.view;

import br.com.mg3.classes.ColorirJTable;
import br.com.mg3.classes.MeuRenderer;
import java.awt.Color;
import java.awt.EventQueue;
import java.beans.Beans;
import java.util.ArrayList;
import java.util.List;
import javax.persistence.RollbackException;
import javax.swing.*;
import javax.swing.table.DefaultTableCellRenderer;
import javax.swing.table.TableColumn;

public class frame_Cfop extends JPanel {
    
    public frame_Cfop() {
        
        initComponents();
        alinharConteudoTable();
        if (!Beans.isDesignTime()) {
            entityManager.getTransaction().begin();
        }
    }

    //metodo para alinhar os conteudos na tabela
    public void alinharConteudoTable() {
        DefaultTableCellRenderer esquerda = new DefaultTableCellRenderer();
        DefaultTableCellRenderer centralizado = new DefaultTableCellRenderer();
        DefaultTableCellRenderer direita = new DefaultTableCellRenderer();
        
        esquerda.setHorizontalAlignment(SwingConstants.LEFT);
        centralizado.setHorizontalAlignment(SwingConstants.CENTER);
        direita.setHorizontalAlignment(SwingConstants.RIGHT);
        
        masterTable.getColumnModel().getColumn(0).setCellRenderer(esquerda);
        masterTable.getColumnModel().getColumn(1).setCellRenderer(esquerda);
        masterTable.getColumnModel().getColumn(2).setCellRenderer(esquerda);
        masterTable.getColumnModel().getColumn(3).setCellRenderer(esquerda);
    }
    
    @SuppressWarnings("unchecked")
    // <editor-fold defaultstate="collapsed" desc="Generated Code">
    private void initComponents() {
        bindingGroup = new org.jdesktop.beansbinding.BindingGroup();

        entityManager = java.beans.Beans.isDesignTime() ? null : javax.persistence.Persistence.createEntityManagerFactory("mg3_serverPU").createEntityManager();
        query = java.beans.Beans.isDesignTime() ? null : entityManager.createQuery("SELECT c FROM Cfop c");
        list = java.beans.Beans.isDesignTime() ? java.util.Collections.emptyList() : org.jdesktop.observablecollections.ObservableCollections.observableList(query.getResultList());
        masterScrollPane = new javax.swing.JScrollPane();
        masterTable = new javax.swing.JTable();
        cfopCodLabel = new javax.swing.JLabel();
        cfopDescricaoLabel = new javax.swing.JLabel();
        cfopInformacaoLabel = new javax.swing.JLabel();
        cfopNivelLabel = new javax.swing.JLabel();
        cfopCodField = new javax.swing.JTextField();
        cfopDescricaoField = new javax.swing.JTextField();
        cfopNivelField = new javax.swing.JTextField();
        saveButton = new javax.swing.JButton();
        refreshButton = new javax.swing.JButton();
        newButton = new javax.swing.JButton();
        deleteButton = new javax.swing.JButton();
        jScrollPane1 = new javax.swing.JScrollPane();
        cfopInformacaoField = new javax.swing.JTextArea();
        jTextField1 = new javax.swing.JTextField();
        lb_Pesquisa = new javax.swing.JLabel();

        FormListener formListener = new FormListener();

        masterTable.setFont(new java.awt.Font("Monospaced", 1, 13)); // NOI18N
        masterTable.setAutoResizeMode(javax.swing.JTable.AUTO_RESIZE_OFF);

        org.jdesktop.swingbinding.JTableBinding jTableBinding = org.jdesktop.swingbinding.SwingBindings.createJTableBinding(org.jdesktop.beansbinding.AutoBinding.UpdateStrategy.READ_WRITE, list, masterTable);
        org.jdesktop.swingbinding.JTableBinding.ColumnBinding columnBinding = jTableBinding.addColumnBinding(org.jdesktop.beansbinding.ELProperty.create("${cfopCod}"));
        columnBinding.setColumnName("Código");
        columnBinding.setColumnClass(String.class);
        columnBinding = jTableBinding.addColumnBinding(org.jdesktop.beansbinding.ELProperty.create("${cfopDescricao}"));
        columnBinding.setColumnName("Descricao");
        columnBinding.setColumnClass(String.class);
        columnBinding = jTableBinding.addColumnBinding(org.jdesktop.beansbinding.ELProperty.create("${cfopInformacao}"));
        columnBinding.setColumnName("Informacao");
        columnBinding.setColumnClass(String.class);
        columnBinding = jTableBinding.addColumnBinding(org.jdesktop.beansbinding.ELProperty.create("${cfopNivel}"));
        columnBinding.setColumnName("Nivel");
        columnBinding.setColumnClass(String.class);
        bindingGroup.addBinding(jTableBinding);
        jTableBinding.bind();
        masterScrollPane.setViewportView(masterTable);
        masterTable.getColumnModel().getColumn(0).setPreferredWidth(50);
        masterTable.getColumnModel().getColumn(1).setPreferredWidth(1000);
        masterTable.getColumnModel().getColumn(2).setPreferredWidth(1300);

        cfopCodLabel.setText("Código");

        cfopDescricaoLabel.setText("Descricao");

        cfopInformacaoLabel.setText("Informação");

        cfopNivelLabel.setText("Nível");

        cfopCodField.setFont(new java.awt.Font("Monospaced", 1, 13)); // NOI18N

        org.jdesktop.beansbinding.Binding binding = org.jdesktop.beansbinding.Bindings.createAutoBinding(org.jdesktop.beansbinding.AutoBinding.UpdateStrategy.READ_WRITE, masterTable, org.jdesktop.beansbinding.ELProperty.create("${selectedElement.cfopCod}"), cfopCodField, org.jdesktop.beansbinding.BeanProperty.create("text"));
        binding.setSourceUnreadableValue(null);
        bindingGroup.addBinding(binding);
        binding = org.jdesktop.beansbinding.Bindings.createAutoBinding(org.jdesktop.beansbinding.AutoBinding.UpdateStrategy.READ, masterTable, org.jdesktop.beansbinding.ELProperty.create("${selectedElement != null}"), cfopCodField, org.jdesktop.beansbinding.BeanProperty.create("enabled"));
        bindingGroup.addBinding(binding);

        cfopDescricaoField.setFont(new java.awt.Font("Monospaced", 1, 13)); // NOI18N

        binding = org.jdesktop.beansbinding.Bindings.createAutoBinding(org.jdesktop.beansbinding.AutoBinding.UpdateStrategy.READ_WRITE, masterTable, org.jdesktop.beansbinding.ELProperty.create("${selectedElement.cfopDescricao}"), cfopDescricaoField, org.jdesktop.beansbinding.BeanProperty.create("text"));
        binding.setSourceUnreadableValue(null);
        bindingGroup.addBinding(binding);
        binding = org.jdesktop.beansbinding.Bindings.createAutoBinding(org.jdesktop.beansbinding.AutoBinding.UpdateStrategy.READ, masterTable, org.jdesktop.beansbinding.ELProperty.create("${selectedElement != null}"), cfopDescricaoField, org.jdesktop.beansbinding.BeanProperty.create("enabled"));
        bindingGroup.addBinding(binding);

        cfopNivelField.setFont(new java.awt.Font("Monospaced", 1, 13)); // NOI18N

        binding = org.jdesktop.beansbinding.Bindings.createAutoBinding(org.jdesktop.beansbinding.AutoBinding.UpdateStrategy.READ_WRITE, masterTable, org.jdesktop.beansbinding.ELProperty.create("${selectedElement.cfopNivel}"), cfopNivelField, org.jdesktop.beansbinding.BeanProperty.create("text"));
        binding.setSourceUnreadableValue(null);
        bindingGroup.addBinding(binding);
        binding = org.jdesktop.beansbinding.Bindings.createAutoBinding(org.jdesktop.beansbinding.AutoBinding.UpdateStrategy.READ, masterTable, org.jdesktop.beansbinding.ELProperty.create("${selectedElement != null}"), cfopNivelField, org.jdesktop.beansbinding.BeanProperty.create("enabled"));
        bindingGroup.addBinding(binding);

        saveButton.setText("Save");
        saveButton.addActionListener(formListener);

        refreshButton.setText("Refresh");
        refreshButton.addActionListener(formListener);

        newButton.setText("New");
        newButton.addActionListener(formListener);

        deleteButton.setText("Delete");

        binding = org.jdesktop.beansbinding.Bindings.createAutoBinding(org.jdesktop.beansbinding.AutoBinding.UpdateStrategy.READ, masterTable, org.jdesktop.beansbinding.ELProperty.create("${selectedElement != null}"), deleteButton, org.jdesktop.beansbinding.BeanProperty.create("enabled"));
        bindingGroup.addBinding(binding);

        deleteButton.addActionListener(formListener);

        cfopInformacaoField.setBackground(new java.awt.Color(212, 208, 200));
        cfopInformacaoField.setColumns(20);
        cfopInformacaoField.setFont(new java.awt.Font("Monospaced", 1, 13)); // NOI18N
        cfopInformacaoField.setLineWrap(true);
        cfopInformacaoField.setRows(5);
        cfopInformacaoField.setWrapStyleWord(true);
        cfopInformacaoField.setBorder(javax.swing.BorderFactory.createEmptyBorder(1, 1, 1, 1));

        binding = org.jdesktop.beansbinding.Bindings.createAutoBinding(org.jdesktop.beansbinding.AutoBinding.UpdateStrategy.READ_WRITE, masterTable, org.jdesktop.beansbinding.ELProperty.create("${selectedElement.cfopInformacao}"), cfopInformacaoField, org.jdesktop.beansbinding.BeanProperty.create("text"));
        bindingGroup.addBinding(binding);
        binding = org.jdesktop.beansbinding.Bindings.createAutoBinding(org.jdesktop.beansbinding.AutoBinding.UpdateStrategy.READ_WRITE, masterTable, org.jdesktop.beansbinding.ELProperty.create("${selectedElement != null}"), cfopInformacaoField, org.jdesktop.beansbinding.BeanProperty.create("enabled"));
        bindingGroup.addBinding(binding);

        jScrollPane1.setViewportView(cfopInformacaoField);

        jTextField1.setFont(new java.awt.Font("Monospaced", 1, 13)); // NOI18N

        lb_Pesquisa.setBorder(javax.swing.BorderFactory.createTitledBorder("Filtro de pesquisa de CFOP - Informe a CFOP a ser pesquisada"));

        javax.swing.GroupLayout layout = new javax.swing.GroupLayout(this);
        this.setLayout(layout);
        layout.setHorizontalGroup(
            layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(layout.createSequentialGroup()
                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                    .addGroup(layout.createSequentialGroup()
                        .addGap(80, 80, 80)
                        .addComponent(jTextField1, javax.swing.GroupLayout.PREFERRED_SIZE, 170, javax.swing.GroupLayout.PREFERRED_SIZE))
                    .addComponent(lb_Pesquisa, javax.swing.GroupLayout.PREFERRED_SIZE, 321, javax.swing.GroupLayout.PREFERRED_SIZE)
                    .addGroup(layout.createSequentialGroup()
                        .addGap(10, 10, 10)
                        .addComponent(cfopCodLabel)
                        .addGap(76, 76, 76)
                        .addComponent(cfopDescricaoLabel))
                    .addGroup(layout.createSequentialGroup()
                        .addGap(10, 10, 10)
                        .addComponent(cfopCodField, javax.swing.GroupLayout.PREFERRED_SIZE, 105, javax.swing.GroupLayout.PREFERRED_SIZE)
                        .addGap(6, 6, 6)
                        .addComponent(cfopDescricaoField, javax.swing.GroupLayout.PREFERRED_SIZE, 823, javax.swing.GroupLayout.PREFERRED_SIZE))
                    .addGroup(layout.createSequentialGroup()
                        .addGap(10, 10, 10)
                        .addComponent(cfopInformacaoLabel))
                    .addGroup(layout.createSequentialGroup()
                        .addGap(10, 10, 10)
                        .addComponent(jScrollPane1, javax.swing.GroupLayout.PREFERRED_SIZE, 934, javax.swing.GroupLayout.PREFERRED_SIZE))
                    .addGroup(layout.createSequentialGroup()
                        .addGap(10, 10, 10)
                        .addComponent(cfopNivelLabel)))
                .addGap(0, 10, Short.MAX_VALUE))
            .addGroup(layout.createSequentialGroup()
                .addGap(10, 10, 10)
                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                    .addGroup(layout.createSequentialGroup()
                        .addComponent(masterScrollPane)
                        .addGap(10, 10, 10))
                    .addGroup(layout.createSequentialGroup()
                        .addComponent(cfopNivelField, javax.swing.GroupLayout.PREFERRED_SIZE, 53, javax.swing.GroupLayout.PREFERRED_SIZE)
                        .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
                        .addComponent(newButton, javax.swing.GroupLayout.PREFERRED_SIZE, 73, javax.swing.GroupLayout.PREFERRED_SIZE)
                        .addGap(6, 6, 6)
                        .addComponent(deleteButton, javax.swing.GroupLayout.PREFERRED_SIZE, 73, javax.swing.GroupLayout.PREFERRED_SIZE)
                        .addGap(6, 6, 6)
                        .addComponent(refreshButton)
                        .addGap(6, 6, 6)
                        .addComponent(saveButton, javax.swing.GroupLayout.PREFERRED_SIZE, 73, javax.swing.GroupLayout.PREFERRED_SIZE)
                        .addContainerGap())))
        );
        layout.setVerticalGroup(
            layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(layout.createSequentialGroup()
                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                    .addGroup(layout.createSequentialGroup()
                        .addGap(20, 20, 20)
                        .addComponent(jTextField1, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
                    .addComponent(lb_Pesquisa, javax.swing.GroupLayout.PREFERRED_SIZE, 44, javax.swing.GroupLayout.PREFERRED_SIZE))
                .addGap(6, 6, 6)
                .addComponent(masterScrollPane, javax.swing.GroupLayout.PREFERRED_SIZE, 309, javax.swing.GroupLayout.PREFERRED_SIZE)
                .addGap(6, 6, 6)
                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                    .addComponent(cfopCodLabel)
                    .addComponent(cfopDescricaoLabel))
                .addGap(6, 6, 6)
                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                    .addComponent(cfopCodField, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
                    .addComponent(cfopDescricaoField, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
                .addGap(6, 6, 6)
                .addComponent(cfopInformacaoLabel)
                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                .addComponent(jScrollPane1, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                    .addGroup(layout.createSequentialGroup()
                        .addComponent(cfopNivelLabel)
                        .addGap(6, 6, 6)
                        .addComponent(cfopNivelField, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
                        .addContainerGap())
                    .addGroup(javax.swing.GroupLayout.Alignment.TRAILING, layout.createSequentialGroup()
                        .addGap(0, 32, Short.MAX_VALUE)
                        .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                            .addComponent(newButton)
                            .addComponent(deleteButton)
                            .addComponent(refreshButton)
                            .addComponent(saveButton))
                        .addGap(35, 35, 35))))
        );

        bindingGroup.bind();
    }

    // Code for dispatching events from components to event handlers.

    private class FormListener implements java.awt.event.ActionListener {
        FormListener() {}
        public void actionPerformed(java.awt.event.ActionEvent evt) {
            if (evt.getSource() == saveButton) {
                frame_Cfop.this.saveButtonActionPerformed(evt);
            }
            else if (evt.getSource() == refreshButton) {
                frame_Cfop.this.refreshButtonActionPerformed(evt);
            }
            else if (evt.getSource() == newButton) {
                frame_Cfop.this.newButtonActionPerformed(evt);
            }
            else if (evt.getSource() == deleteButton) {
                frame_Cfop.this.deleteButtonActionPerformed(evt);
            }
        }
    }// </editor-fold>

    @SuppressWarnings("unchecked")
    private void refreshButtonActionPerformed(java.awt.event.ActionEvent evt) {                                              
        entityManager.getTransaction().rollback();
        entityManager.getTransaction().begin();
        java.util.Collection data = query.getResultList();
        for (Object entity : data) {
            entityManager.refresh(entity);
        }
        list.clear();
        list.addAll(data);
    }                                             
    
    private void deleteButtonActionPerformed(java.awt.event.ActionEvent evt) {                                             
        int[] selected = masterTable.getSelectedRows();
        List<br.com.mg3.controller.Cfop> toRemove = new ArrayList<br.com.mg3.controller.Cfop>(selected.length);
        for (int idx = 0; idx < selected.length; idx++) {
            br.com.mg3.controller.Cfop c = list.get(masterTable.convertRowIndexToModel(selected[idx]));
            toRemove.add(c);
            entityManager.remove(c);
        }
        list.removeAll(toRemove);
    }                                            
    
    private void newButtonActionPerformed(java.awt.event.ActionEvent evt) {                                          
        br.com.mg3.controller.Cfop c = new br.com.mg3.controller.Cfop();
        entityManager.persist(c);
        list.add(c);
        int row = list.size() - 1;
        masterTable.setRowSelectionInterval(row, row);
        masterTable.scrollRectToVisible(masterTable.getCellRect(row, 0, true));
    }                                         
    
    private void saveButtonActionPerformed(java.awt.event.ActionEvent evt) {                                           
        try {
            entityManager.getTransaction().commit();
            entityManager.getTransaction().begin();
        } catch (RollbackException rex) {
            rex.printStackTrace();
            entityManager.getTransaction().begin();
            List<br.com.mg3.controller.Cfop> merged = new ArrayList<br.com.mg3.controller.Cfop>(list.size());
            for (br.com.mg3.controller.Cfop c : list) {
                merged.add(entityManager.merge(c));
            }
            list.clear();
            list.addAll(merged);
        }
    }                                          
    // Variables declaration - do not modify
    private javax.swing.JTextField cfopCodField;
    private javax.swing.JLabel cfopCodLabel;
    private javax.swing.JTextField cfopDescricaoField;
    private javax.swing.JLabel cfopDescricaoLabel;
    private javax.swing.JTextArea cfopInformacaoField;
    private javax.swing.JLabel cfopInformacaoLabel;
    private javax.swing.JTextField cfopNivelField;
    private javax.swing.JLabel cfopNivelLabel;
    private javax.swing.JButton deleteButton;
    private javax.persistence.EntityManager entityManager;
    private javax.swing.JScrollPane jScrollPane1;
    private javax.swing.JTextField jTextField1;
    private javax.swing.JLabel lb_Pesquisa;
    private java.util.List<br.com.mg3.controller.Cfop> list;
    private javax.swing.JScrollPane masterScrollPane;
    private javax.swing.JTable masterTable;
    private javax.swing.JButton newButton;
    private javax.persistence.Query query;
    private javax.swing.JButton refreshButton;
    private javax.swing.JButton saveButton;
    private org.jdesktop.beansbinding.BindingGroup bindingGroup;
    // End of variables declaration

    public static void main(final String[] args) {
        
        EventQueue.invokeLater(new Runnable() {
            
            public void run() {
                JFrame frame = new JFrame();
                frame.setContentPane(new frame_Cfop());
                //frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
                frame.pack();
                frame.setVisible(true);
                frame.setLocationRelativeTo(null);
                frame.setTitle(args[0]);
            }
        });
    }
}