ColorRender só muda de cor as 3 primeiras colunas da jtable

package model;

import java.awt.Color;
import java.awt.Component;
import javax.swing.JTable;
import javax.swing.table.DefaultTableCellRenderer;

/**
 *
 * @author wagner
 */
public class ColorRenderer extends DefaultTableCellRenderer {

    @Override
   public Component getTableCellRendererComponent(JTable table, Object value, boolean isSelected, boolean hasFocus, int row, int column) {
      Component comp = super.getTableCellRendererComponent(table, value, isSelected, hasFocus, row, column);

      if (row % 2 == 0) {
          comp.setBackground(Color.LIGHT_GRAY);
      } else {
          comp.setBackground(Color.WHITE);
      }
      return comp;
   }
}