@staticmethod
def random_color(start, end, opacity=None):
    red = random.randint(start, end)
    green = random.randint(start, end)
    blue = random.randint(start, end)
    if (opacity is None):
        return (red, green, blue)
    return (red, green, blue, opacity)
@staticmethod
def random_color(start, end, opacity=None):
    red = random.randint(start, end)
    green = random.randint(start, end)
    blue = random.randint(start, end)
    if (opacity is None):
        return (red, green, blue)
    return (red, green, blue, opacity)