title: How to set the line style for each kdeplot in a jointgrid
body: <p>I am using seaborn to create a kdeplot with marginal distribution as described in <a href="https://stackoverflow.com/a/49658133/1232833">this answer</a>. I adapted the code a little to give me this:</p>
  
  <pre><code>import matplotlib.pyplot as plt
  import seaborn as sns
  
  iris = sns.load_dataset("iris")
  setosa = iris.loc[iris.species == "setosa"]
  virginica = iris.loc[iris.species == "virginica"]
  
  g = sns.JointGrid(x="sepal_width", y="petal_length", data=iris)
  sns.kdeplot(setosa.sepal_width, setosa.sepal_length, cmap="Reds",
          shade=False, shade_lowest=False, ax=g.ax_joint)
  sns.kdeplot(virginica.sepal_width, virginica.sepal_length, cmap="Blues",
          shade=False, shade_lowest=False, ax=g.ax_joint)
  sns.distplot(setosa.sepal_width, kde=True, hist=False, color="r", ax=g.ax_marg_x)
  sns.distplot(virginica.sepal_width, kde=True, hist=False, color="b", ax=g.ax_marg_x)
  sns.distplot(setosa.sepal_length, kde=True, hist=False, color="r", ax=g.ax_marg_y, vertical=True)
  sns.distplot(virginica.sepal_length, kde=True, hist=False, color="b", ax=g.ax_marg_y, vertical=True)
  plt.show()
  </code></pre>
  
  <p><a href="https://i.stack.imgur.com/TzfAw.png" rel="noreferrer"><img src="https://i.stack.imgur.com/TzfAw.png" alt="enter image description here"></a></p>
  
  <p>This is impossible to print in black and white. <strong>How can I get seaborn to print the kdeplot and distplot lines in a specifically styled (dotted / dashed / ...) way to make them distinguishable when printed in black and white?</strong></p>
  
  <p>The <a href="https://stackoverflow.com/questions/44261803/change-line-style-in-seaborn-facet-grid">related questions</a> deal with other types of plots which appear to support this, but this does not seem to be supported by <a href="https://seaborn.pydata.org/generated/seaborn.kdeplot.html" rel="noreferrer">kdeplot</a> and <a href="https://seaborn.pydata.org/generated/seaborn.distplot.html" rel="noreferrer">distplot</a>.</p>