Candlestick Issues

I was looking at the example located @
http://matplotlib.sourceforge.net/screenshots/finance_work2.py
and was wondering if it's possible to color the
candlestick boxes so that the candlestick wicks are
not
visible through them. Additionally, is it possible to
have a candlestick that's not just a plain line when
the open and the close prices are the same. Would it
be possible to add a horizontal tick mark?

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Also, I noticed that the simple moving average is
calculated based on the price open instead of price close.

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