new_contents: import sensor, time
  
  sensor.reset()
  sensor.set_brightness(0)
  sensor.set_saturation(0)
  sensor.set_gainceiling(8)
  sensor.set_contrast(2)
  
  # Set sensor pixel format
  sensor.set_framesize(sensor.QVGA)
  sensor.set_pixformat(sensor.RGB565)
  sensor.set_colorbar(True)
  
  # Skip a few frames to allow the sensor to be stable
  for i in range(0, 10):
      image = sensor.snapshot()
  
  #color bars thresholds
  t = [lambda r, g, b: r < 50  and g < 50  and b < 50,   # Black
       lambda r, g, b: r < 50  and g < 50  and b > 200,  # Blue
       lambda r, g, b: r > 200 and g < 50  and b < 50,   # Red
       lambda r, g, b: r > 200 and g < 50  and b > 200,  # Purple
       lambda r, g, b: r < 50  and g > 200 and b < 50,   # Green
       lambda r, g, b: r < 50  and g > 200 and b > 200,  # Aqua
       lambda r, g, b: r > 200 and g > 200 and b < 50,   # Yellow
       lambda r, g, b: r > 200 and g > 200 and b > 200]  # White
  
  #320x240 image with 8 color bars each one is approx 40 pixels.
  #we start from the center of the frame buffer, and average the 
  #values of 10 sample pixels from the center of each color bar.
  for i in range(0, 8):
      avg = (0, 0, 0)
      idx = 40*i+20 #center of colorbars
      for off in range(0, 10): #avg 10 pixels
          rgb = image.get_pixel(idx+off, 120)
          avg = tuple(map(sum, zip(avg, rgb)))
  
      if not t[i](avg[0]/10, avg[1]/10, avg[2]/10):
          raise Exception("COLOR BARS TEST FAILED")
  
  print("\nCOLOR BARS TEST PASSED...")
  
subject: Add colorbar test script