Problems with ListCellRenderer

Question

This is my ListCellRenderer:

public class MyListCellRendererOTP extends DefaultListCellRenderer {

        @Override
        public Component getListCellRendererComponent(JList<?> list, Object value, int index, boolean isSelected, boolean cellHasFocus) {
            Component cell = null;

            if (value instanceof Domain) {
                Domain domain = (Domain)value;
                int status = domain.getStatus();
                String naziv = domain.getNaziv();
                int naziv1= domain.getId();
                String naziv2=naziv+"  "+naziv1;
                ArrayList<Stavka> s=domain.getStavke();
                int nasao=0;
                for(int i=0;i<s.size();i++){
                    if(s.get(i).getTrazKol()!=s.get(i).getIzdKol()){nasao=1;}
                }

                cell = super.getListCellRendererComponent(list,naziv2,index, isSelected, cellHasFocus);
                if(nasao==1){
                    cell.setBackground(Color.cyan);
                }else{
                    cell.setBackground(Color.white);
                }
                if(isSelected){
                    cell.setBackground(Color.green);
                }
            }
        return cell;
    }
  }

I have a Jlist that is populated with Domains. The idea is for renderer to change background of rows where certain fields of Domain class are different, as shown in the code. But this is not working for some reason. Every row gets affected. Can anyone help?