     redDisp.setText(buf,false);
     redDisp.update();
   }  
+
+  int red = map(redSlider.currentValue,0,100,0,255);
+  int green = map(greenSlider.currentValue,0,100,0,255);
+  int blue = map(blueSlider.currentValue,0,100,0,255);
+  int newColor = canvas.tft->color565(red,green,blue);
+
+  demoDisp.bgColor = newColor;
+  demoDisp.update();
 }
 
 //==================================
 // SETUP
 //==================================
-void guiSetup(){  
+void guiSetup(){ 
+  demoDisp.setSize(80,40);
+  demoDisp.setColors(ILI9341_BLACK,ILI9341_WHITE,ILI9341_LIGHTGREY);
+  demoDisp.setText("",false); 
+   
   blueSlider.setDebounce(0);
-  blueSlider.setSize(40,240);
+  blueSlider.setSize(40,140);
   blueSlider.setColors(BLACK,BLUE,WHITE);
   blueSlider.setEventHandler(&sliderEventHandler);
   

  blueDisp.setText("",false); 
  
  greenSlider.setDebounce(0);
  greenSlider.setSize(40,240);
  greenSlider.setColors(BLACK,GREEN,WHITE);
  greenSlider.setEventHandler(&sliderEventHandler);


  greenDisp.setText("",false);

  redSlider.setDebounce(0);
  redSlider.setSize(40,140);
  redSlider.setColors(BLACK,RED,WHITE);
  redSlider.setEventHandler(&sliderEventHandler);

