stage.set_background_color("black")
t = turtle.Turtle()
t.penup()
t.speed(100)
sides = 4
colors = ["red", "yellow", "blue", "green", "purple", "orange"]
for m in range(100):
t.forward(m*4)
position = t.position()
heading = t.heading()
for n in range(int(m/2)):
t.pendown()
t.pencolor(colors[n%sides])
t.forward(2*n)
t.right(360/sides - 2)
t.penup()
t.setx(position[0])
t.sety(position[1])
t.setheading(heading)
t.left(360/sides + 2)
