from __future__ import division, print_function
from visual import *

display(background=(1, 1, 1))
ring()
ring(axis=(0, 5, 0))
ring(pos=(0, 1, 0), axis=(0, 1, 0), color=(1, 1, .3))

# Make a stack

for y in range(-10, 11, 1):
    ring(axis=(0, 1, 0), pos=(-3, y, 0), color=(.5 + -y/20, 0, .5 + y/20))