Beautiful Colorful Thing

This was made in code.org

import turtle, random
screen = turtle.Screen()
pen = turtle.Turtle()
pen.speed(0)
pen.pensize(4)
for i in range(0, 9999):
    pen.color(random.randint(0, 255), random.randint(0, 255), random.randint(0, 255))
    pen.forward(i)
    pen.left(145)