Instructions are inside the comment. The GetAWB() is not implemented yet.
/* Copy this to your setup() after initializing camera.
   SwingUtilities.invokeLater(new Runnable() {  
     public void run() {  
       pd = new PropertyDialog();  
     }  
   });  

Copy this outside your setup() or draw()
int exposurePS3Eye=80;
int gainPS3Eye=5;
PropertyDialog pd;

Store this in a separate file say gui.pde in your main sketch folder.
*/
import java.awt.*;  
import java.awt.event.*;  
import javax.swing.*;  
import javax.swing.event.*;  
import java.text.*;
import java.util.*;
class PropertyDialog implements ChangeListener {  
 
 JFrame jfrm;
 JLabel jlabGain;
 JLabel jlabExposure;
 JLabel jlabRed;
 JLabel jlabGreen;
 JLabel jlabBlue;
 JLabel jlabInfo;
 JSlider jsldrGain;
 JSlider jsldrExposure;
 JSlider jsldrRed;
 JSlider jsldrGreen;
 JSlider jsldrBlue;
 JCheckBox jcbAWB;
 DecimalFormat df;
 PS3Eye p;

 PropertyDialog(PS3Eye pp) {  
   p=pp;  
   jfrm = new JFrame("Camera properties");  
   jfrm.getContentPane().setLayout(new FlowLayout());
   jfrm.setSize(340, 520);  
   jfrm.setDefaultCloseOperation(JFrame.HIDE_ON_CLOSE);  
   df = new DecimalFormat("#;-#");
   setupSliders();
   setupLabels();
   jcbAWB = new JCheckBox("Automatic White Balance");
   jsldrGain.addChangeListener(this);
   jsldrExposure.addChangeListener(this);
   jsldrRed.addChangeListener(this);
   jsldrGreen.addChangeListener(this);
   jsldrBlue.addChangeListener(this);
   jcbAWB.addItemListener(new ItemListener() {  
     public void itemStateChanged(ItemEvent ie) {  
       p.AutoAWB(((JCheckBox)(ie.getItem())).isSelected());
     }
   });  

   Container cp = jfrm.getContentPane();
   cp.add(jlabGain);
   cp.add(jsldrGain);
   cp.add(jlabExposure);
   cp.add(jsldrExposure);
   cp.add(jlabRed);
   cp.add(jsldrRed);
   cp.add(jlabGreen);
   cp.add(jsldrGreen);
   cp.add(jlabBlue);
   cp.add(jsldrBlue);
   cp.add(new JLabel("               "));
   cp.add(jcbAWB);
   cp.add(new JLabel("               "));
   cp.add(jlabInfo);
 }  

 public void stateChanged(ChangeEvent ce) {  
   showSettings(ce);
 }

 void setupSliders() {
   jsldrGain = new JSlider(0, 79);
   jsldrExposure = new JSlider(0, 511);
   jsldrRed = new JSlider(0, 255);  
   jsldrBlue = new JSlider(0, 255);  
   jsldrGreen = new JSlider(0, 255);  
 
   jsldrGain.setMajorTickSpacing(10);
   jsldrExposure.setMajorTickSpacing(64);
   jsldrRed.setMajorTickSpacing(32);
   jsldrBlue.setMajorTickSpacing(32);
   jsldrGreen.setMajorTickSpacing(32);

   Hashtable table = new Hashtable();
   for(int i = 0; i <= 255; i += 32)
     table.put(new Integer(i), new JLabel("" + i));
   Hashtable table2 = new Hashtable();
   for(int i = 0; i <= 511; i += 64)
     table2.put(new Integer(i), new JLabel("" + i));
   Hashtable table3 = new Hashtable();
   for(int i = 0; i <= 79; i += 10)
     table3.put(new Integer(i), new JLabel("" + i));
   jsldrRed.setLabelTable(table);
   jsldrGreen.setLabelTable(table);
   jsldrBlue.setLabelTable(table);
   jsldrExposure.setLabelTable(table2);
   jsldrGain.setLabelTable(table3);

   jsldrGain.setPaintTicks(true);
   jsldrExposure.setPaintTicks(true);
   jsldrRed.setPaintTicks(true);
   jsldrBlue.setPaintTicks(true);
   jsldrGreen.setPaintTicks(true);

   jsldrGain.setPaintLabels(true);
   jsldrExposure.setPaintLabels(true);
   jsldrRed.setPaintLabels(true);
   jsldrBlue.setPaintLabels(true);
   jsldrGreen.setPaintLabels(true);

   Dimension sldrSize = new Dimension(240, 60);
   jsldrGain.setPreferredSize(sldrSize);
   jsldrExposure.setPreferredSize(sldrSize);
   jsldrRed.setPreferredSize(sldrSize);
   jsldrBlue.setPreferredSize(sldrSize);
   jsldrGreen.setPreferredSize(sldrSize);

   jsldrGain.setValue(p.GetGain());  
   jsldrExposure.setValue(p.GetExposure());
   byte r=127, g=127, b=127;
   jsldrRed.setValue((int)r);  
   jsldrGreen.setValue((int)g);  
   jsldrBlue.setValue((int)b);  
 }

 void setupLabels() {
   jlabGain = new JLabel("Gain");
   jlabExposure = new JLabel("Exposure");
   jlabRed = new JLabel("Red");
   jlabGreen = new JLabel("Green");
   jlabBlue = new JLabel("Blue");
   Dimension labSize = new Dimension(60, 25);
   jlabRed.setPreferredSize(labSize);
   jlabExposure.setPreferredSize(labSize);
   jlabGain.setPreferredSize(labSize);
   jlabBlue.setPreferredSize(labSize);
   jlabGreen.setPreferredSize(labSize);
   jlabInfo = new JLabel("");
   jlabInfo.setPreferredSize(new Dimension(110, 100));
   showSettings();
 }

 void showSettings() {
   String bal;
   jlabInfo.setText("<html>"+"<br>Gain: " +df.format(jsldrGain.getValue()) +"<br>Exposure: " +df.format(jsldrExposure.getValue()) +"<br>Red: " +df.format(jsldrRed.getValue()) +"<br>Green: " +df.format(jsldrGreen.getValue()) +"<br>Blue: " +df.format(jsldrBlue.getValue()));
 }
 
 void showSettings(ChangeEvent ce) {
   String bal;
   jlabInfo.setText("<html>"+"<br>Gain: " +df.format(jsldrGain.getValue()) +"<br>Exposure: " +df.format(jsldrExposure.getValue()) +"<br>Red: " +df.format(jsldrRed.getValue()) +"<br>Green: " +df.format(jsldrGreen.getValue()) +"<br>Blue: " +df.format(jsldrBlue.getValue()));
   if (ce.getSource()==jsldrExposure)
   {
     p.SetExposure(exposurePS3Eye=jsldrExposure.getValue());
     return;
   }
   else if (ce.getSource()==jsldrGain)
   {
     p.SetGain(gainPS3Eye=jsldrGain.getValue());
     return;
   }
   else if (ce.getSource()==jsldrRed||ce.getSource()==jsldrGreen||ce.getSource()==jsldrBlue
)
   {
     p.SetWhiteBalance((byte)jsldrRed.getValue(), (byte)jsldrGreen.getValue(), (byte)jsldrBlue.getValue());
     return;
   }
 }
}