Circle(width=90, height=90, color='black')
Circle(width=80, height=80, color='violet')
Circle(width=70, height=70, color='indigo')
Circle(width=60, height=60, color='blue')
Circle(width=50, height=50, color='green')
Circle(width=40, height=40, color='yellow')
Circle(width=30, height=30, color='orange')
Circle(width=20, height=20, color='red')
Circle(width=10, height=10, color='white')