import math
import turtle

def xt(t):
    return 16 * math.sin(t) ** 3

def yt(t):
    return 13 * math.cos(t) - 5 * math.cos(2 * t) - 2 * math.cos(3 * t) - math.cos(4 * t)

t = turtle.Turtle()
t.speed(500)
turtle.colormode(255)
turtle.Screen().bgcolor(0, 0, 0)

for i in range(2550):
    t.goto(xt(i/10) * 20, yt(i/10) * 20)
    t.pencolor((255 - i) % 255, i % 255, (255 - i) % 255)
    t.dot()
    
t.hideturtle()
turtle.update()
turtle.mainloop()