save project

ssbb.py

 import turtle
+colors=["red","green","yellow","blue"]
 pen=turtle.Pen()
+screen=turtle.Screen()
+screen.bgcolor('black')
 for i in range(1,300):
+    pen.pencolor(colors[i%4]) 
     pen.forward(i)
     pen.right(91)
 pen.hideturtle()