# Recipe 11: Make a full moon

def makeFullmoon(picture):
  for p in getPixels(picture): #loop for all pixels
    value=getBlue(p)
    setBlue(p, value*0.7)
    value=getGreen(p)
    setGreen(p, value*0.2)
    value=getRed(p)
    setRed(p, value*0.2)