def METHOD_NAME(color, amount=0.4, is_hsv=False):
    if not is_hsv:
        hsv = matplotlib.colors.rgb_to_hsv(matplotlib.colors.to_rgb(color))
    else:
        hsv = color
    print(hsv)
    hsv[1] = max(0,hsv[1] - amount)
    return matplotlib.colors.hsv_to_rgb(hsv)