Fix ValueError when trying to plot with hist=True and color as list of colors.
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… of colors.
## Error message:
"ValueError: The 'color' keyword argument must have one color per
dataset, but 1 datasets and 2 colors were provided"
## How to reproduce:
```
import numpy as np
import pandas as pd
import joypy
table = pd.DataFrame({'one':np.random.randn(1000), 'two':
np.random.randn(1000) + 5})
joypy.joyplot(table, color=['skyblue', 'fuchsia'], hist=True)
```
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Hi, I tried to plot a table with joypy with
hist=Trueand "color" being a list of colors and got an error from matplotlib (v3.6.0).Error message:
"ValueError: The 'color' keyword argument must have one color per dataset, but 1 datasets and 2 colors were provided"
How to reproduce: