import turtle
import random
import math
zolw = turtle.Turtle()
okno = turtle.Screen()

turtle.register_shape("diament", ((-5,0),(0,10),(5,0),(0,-10)))
zolw.shape("diament")
zolw.fillcolor("blue")
okno.bgcolor("black")

zolw.speed(0)

# for i in range(4):
#     zolw.forward(100)
#     zolw.right(90)
# okno.mainloop()


# penup()
# pendown()
#pensize()

# okno.bgcolor()
# color("")

kolory = ["black","#333333","#666666","#cccccc","white"]
zolw.left(90)
zolw.forward(-100)
b = 0
while True:
    b+= 1
    for i in range(5):
        zolw.width(10)
        zolw.forward(10)
        zolw.left(10)
    if b ==5:
        b = 0
    zolw.color(kolory[b % 6])