# Inspired by "Georgia's Spirals"

from turtle import *

bgcolor ('black')

for a_color, a_pensize, start_radius, stop_radius, radius_step in (
    ('green', 1, 50, 30, -6),       
    ('yellow', 1, 80, 50, -6),
    ('orange', 1, 130, 80, -6),
    ('red', 1, 210, 130, -6),


):
    pensize (a_pensize)
    color (a_color)
    for angle_index in range (4):
        for radius in range (start_radius, stop_radius, radius_step):
            circle (radius)
            right(3.25)
        right (3.25)
        
done ()