import random
import turtle
colors = ['violet','indigo','blue','green','yellow','orange','red']     # Added VIBGYOR
t = turtle.Turtle()
t.speed(10)
turtle.bgcolor("black")
length=100
angle =50
size=5
for i in range(length):
    color=random.choice(colors)
    t.pencolor(color)
    t.fillcolor(color)
    t.penup()
    t.forward(i+50)
    t.pendown()
    t.left(angle)
    t.begin_fill()
    t.circle(size)
    t.end_fill()
turtle.exitonclick()
turtle.bgcolor("black")