Turtle Graphics Help - Filling each shape in

[Nate]

Hi, how can i fill each polygon with a different color? the current code i have only colors the drawings sides, but it doesn't fill the inside.
Thanks!

import turtle
window = turtle.Screen()
window.bgcolor("white")
vlad  = turtle.Turtle()
vlad.speed(300)
vlad.penup()
def drawingpoly() : #Polygon Drawings

    four = 4 # number of sides
    five = 5 # number of sides
    six = 6 # number of sides
    seven = 7 # number of sides
    eight = 8 # number of sides
    nine = 9 # number of sides
    x = -100 # x position
    y = 200 # y position
    vlad.goto(x, y) #move turtle to the coords above (x and y)




    side_length = 150
    angle = 360.0 / four #360 divided by sides
    angle2 = 360.0 / five  # 360 divided by sides
    angle3 = 360.0 / six  # 360 divided by sides
    angle4 = 360.0 / seven  # 360 divided by sides
    angle5 = 360.0 / eight  # 360 divided by sides
    angle6 = 360.0 / nine #360 divided by sides


    for i in range(four): #amount of repeats
        vlad.pencolor("red")
        vlad.begin_fill()
        vlad.pendown()
        vlad.forward(side_length / 2)
        vlad.stamp()  # stamp the turtle symbol
        vlad.forward(side_length / 2)  # move half the distance
        vlad.right(angle)
        vlad.end_fill()
    for i in range(five): #amount of repeats
        vlad.fillcolor("yellow")
        vlad.begin_fill()
        vlad.forward(side_length / 2)
        vlad.stamp()  # stamp the turtle symbol
        vlad.forward(side_length / 2)  # move half the distance
        vlad.right(angle2)
        vlad.end_fill()
    for i in range(six): #amount of repeats
        vlad.begin_fill()
        vlad.forward(side_length / 2)
        vlad.stamp()  # stamp the turtle symbol
        vlad.forward(side_length / 2)  # move half the distance
        vlad.right(angle3)
        vlad.end_fill()
    for i in range(seven): #amount of repeats
        vlad.begin_fill()
        vlad.forward(side_length / 2)
        vlad.stamp()  # stamp the turtle symbol
        vlad.forward(side_length / 2)  # move half the distance
        vlad.right(angle4)
        vlad.end_fill()
    for i in range(eight): #amount of repeats
        vlad.begin_fill()
        vlad.forward(side_length / 2)
        vlad.stamp()  # stamp the turtle symbol
        vlad.forward(side_length / 2)  # move half the distance
        vlad.right(angle5)
        vlad.end_fill()
    for i in range(nine): #amount of repeats
        vlad.begin_fill()
        vlad.forward(side_length)
        vlad.right(angle6)
        vlad.end_fill()
        vlad.penup()