I am working with matplotlib and below you can see my data and my plot.

```
data = {
         'type_sale': ['g_1','g_2','g_3','g_4','g_5','g_6','g_7','g_8','g_9','g_10'],
         'open':[70,20,24,150,80,90,60,90,20,20],
        }

df = pd.DataFrame(data, columns = ['type_sale',
                                   'open',
                                   ])

df.plot(x='type_sale', kind='bar', title='Bar Graph')

```

[![enter image description here](https://i.stack.imgur.com/kDxNG.png)](https://i.stack.imgur.com/kDxNG.png)

So now I want to put a different color (`color = 'red'`) on the fourth bar. I tryed but I colored all instead only one.
So can anybody help me how to solve this ?