colormap does not work if style is applied
#### Code Sample, a copy-pastable example if possible

```python
df.plot(colormap = 'Set2')
df.plot(colormap = 'Set2', style = 'o-')

```
#### Problem description

When I used the colormap without using the style param, the colormap is successfully applied, but if I used the "style = 'o-'" for example, the colormap does not work anymore. Is there  a solution about that?

