Candlesticks representation of IBM's daily price

We could use candlesticks to represent the daily opening, high, low, and closing prices. The vertical line represents high and low prices, while a rectangular bar represents open-close span. When the close price is higher than the opening price, we have a black bar. Otherwise, we would have a red bar. The following program will show exactly this:

import matplotlib.pyplot as plt
import numpy as np
from matplotlib.dates import DateFormatter, WeekdayLocator, HourLocator, DayLocator, MONDAY
from matplotlib.finance import quotes_historical_yahoo, candlestick,\
     plot_day_summary, candlestick2
date1 = ( 2013, 10, 20)
date2 = ( 2013, 11, 10 )
ticker='IBM'
mondays = WeekdayLocator(MONDAY)        # major ticks on the mondays
alldays    = DayLocator()               # minor ticks on the days
weekFormatter = DateFormatter('%b %d')  # e.g., Jan 12
dayFormatter = DateFormatter('%d')      # e.g., 12
quotes = quotes_historical_yahoo...