Design Using Python Turtle

 Source Code

import turtle
import random
from turtle import *
speed(1000)
turtle.colormode(255)
turtle.bgcolor("black")
R = 0
G = 0
B = 0
begin_fill()
goto(-10,10)
for i in range(10):
    for k in range(1,i+10):
        R = random.randrange(0, 257, 10)
        B = random.randrange(0, 257, 10)
        G = random.randrange(0, 250, 10)
        pensize(2)
        color(R, G, B)
        fd(i)
        fd(30)
        right(90)
        fd(i*30)

turtle.done()