#David Yuen
#September 11, 2017
#This program draws different shades of blue.

import turtle
turtle.colormode(255)
bob = turtle.Turtle()
bob.shape("turtle")
bob.backward(100)

for i in range(0,255,10):
    bob.forward(10)
    bob.pensize(i)
    bob.color(0,0,i)
