Rectangular Color Picker

#Program to pick color from a
#rectangular display

from graphics import *
#HSV to RGB color conversion from Wikipedia article
def colors(hue, sat, val):

    h = hue
    s = sat / 255
    v = val

    c = v * s
    m = v - c
    h = h / 60
    x = c * (1 - abs((h % 2) - 1))

    if h >= 0 and h <= 1:
        r = c
        g = x
        b = 0
    elif h >= 1 and h <= 2:
        r = x
        g = c
        b = 0
    elif h >= 2 and h <= 3:
        r = 0
        g = c
        b = x
    elif h >= 3 and h <= 4:
        r = 0
        g = x
        b = c
    elif h >= 4 and h <= 5:
        r = x
        g = 0
        b = c
    elif h >= 5 and h <= 6:
        r = c
        g = 0
        b = x

    r = 255 * (r + m)
    g = 255 * (g + m)
    b = 255 * (b + m)

    color = color_rgb(int(r), int(g), int(b))

    return color

def window():

    win = GraphWin("Color Selection", 1000, 500, autoflush=False)
    win.setCoords(-100, -100, 600, 400)
    win.setBackground("Gray")
    #make the rectangle to choose the color out of
    for y in range(255, 0, -1):#for saturation, 0-255 for R,G,B

        for x in range(360):#for hue, 360 for R,G,B

            color = colors(x, y, 1)

            cube = Rectangle(Point(x, y), Point(x, y))
            cube.setFill(color)
            cube.setOutline(color)
            cube.draw(win)
    #title
    txt = Text(Point(180, 300), "Color Picker")
    txt.draw(win)
    #designates area that will be filled with chosen color
    cube = Rectangle(Point(400, 0), Point(450, 50))
    cube.setOutline("light gray")
    cube.setFill("light gray")
    cube.draw(win)
    #designates area that will be filled with gradient of chosen color
    cube = Rectangle(Point(400, 60), Point(450, 255))
    cube.setOutline("light gray")
    cube.setFill("light gray")
    cube.draw(win)

    return win

def main():

    new_color = {}

    win = window()

    update()

    z = 1
    #hold program open allowing the user to make mouse clicks as much as they want
    while z == 1:

        click = win.getMouse()

        x = click.getX()

        y = click.getY()

        if 450 >= x >= 400 and 255 >= y >= 60 and len(new_color) > 0:

            cube = Rectangle(Point(400, 0), Point(450, 50))
            color = new_color[str(int((y-60)/2))]
            cube.setOutline(color)
            cube.setWidth(1)
            cube.setFill(color)
            cube.draw(win)

        else:

            if 0 > x or x > 360 or 0 > y or y > 255:
                x = 0
                y = 0

            new_color.clear()
            cube = Rectangle(Point(400, 0), Point(450, 50))
            cube.draw(win)

            for v in range(100, 0, -1):

                color = colors(x, y, v/100)

                if v == 100:
                    #draw the initial chosen color in the designated area on the window
                    cube = Rectangle(Point(400, 0), Point(450, 50))
                    cube.setOutline(color)
                    cube.setWidth(1)
                    cube.setFill(color)
                    cube.draw(win)
                #draw the gradient in the designated area on the window
                new_color[str(v)] = color
                cube = Rectangle(Point(400, 60), Point(450, 255))
                cube.setOutline(color)
                cube.setWidth(1)
                cube.setFill(color)
                cube.draw(win)

main()