Problemas com Jfreechart

JFreeChart jFreeChart = (JFreeChart) obj;

jFreeChart.setBackgroundPaint(new Color(0xF1, 0xF1, 0xF1));
	
jFreeChart.setBorderVisible(false);

PiePlot piePlot = (PiePlot) jFreeChart.getPlot();
	
piePlot.setLabelGenerator(new StandardPieSectionLabelGenerator("{2}"));
    
 // Altera as cores do gráfico
    
 //Coleta Amarelo

    piePlot.setSectionPaint(0, new Color(0xB4, 0xBC, 0x36));

    //Entrega Azul

    piePlot.setSectionPaint(2, new Color(0xB9, 0xaE, 0x9D));

    //Fim de Viagem vERDE clARO

    piePlot.setSectionPaint(1, new Color(0x44,0x68, 0xAA));

    //Em deslocamento VERDE

   piePlot.setSectionPaint(3, new Color(0x44, 0xA9, 0x4D));
 
    //Parado vERMELHO

    piePlot.setSectionPaint(4, new Color(0xBF, 0x45,0x35));
    
piePlot.setBackgroundPaint(new Color(0xF1, 0xF1, 0xF1));
    
    
Netsa Parte do codigo q gera o grafico de FORMATO pIZZA...NAO CONSIGO TIRAR A BORDA