DataFrame.plot(subplots=True) forces black-and-white mode regardless of other settings
``` python
import matplotlib.pyplot as plt
import numpy as np
import pandas as pd

df = pd.DataFrame(np.random.randn(6, 4), index=pd.date_range('20150101', periods=6), columns=list('ABCD'))

plotters = [
    "df.plot()",
    "df.plot(legend=None)",
    "df.plot(legend=None, subplots=True, layout=(2, 2))",
    "df['A'].plot(legend=None)",
    "df['A'].plot(legend=None, subplots=True)"
]

for i, plotter in enumerate(plotters, 1):
    eval(plotter)
    plt.title(plotter)
    plt.savefig('%d.png' % i)
    plt.close('all')

```

Also, notice how the title is broken in the third image.

![1](https://cloud.githubusercontent.com/assets/1315874/11011823/43e5a7a2-84fd-11e5-91bf-0a82d0eca5ba.png)

![2](https://cloud.githubusercontent.com/assets/1315874/11011826/49813ffa-84fd-11e5-88a3-261f5c36c0ad.png)

![3](https://cloud.githubusercontent.com/assets/1315874/11011828/4e6623b4-84fd-11e5-9dfd-b1cd8e004056.png)

![4](https://cloud.githubusercontent.com/assets/1315874/11011832/58565524-84fd-11e5-9bf9-67d79d3f71f0.png)

![5](https://cloud.githubusercontent.com/assets/1315874/11011834/5d705ab4-84fd-11e5-92ad-87c53f6ce19c.png)
