title: seaborn pairgrid: using kdeplot with 2 hues
body: <p>Here is my effort to plot a pairgrid plot that use the kdeplot in the lower part with 2 hues:</p>
  
  <p><a href="https://i.stack.imgur.com/YsSZc.png" rel="noreferrer"><img src="https://i.stack.imgur.com/YsSZc.png" alt="enter image description here"></a></p>
  
  <p>My script is:</p>
  
  <pre><code>import seaborn as sns
  g = sns.PairGrid(df2,hue='models')  
  g.map_upper(plt.scatter)
  g.map_lower(sns.kdeplot)
  g.map_diag(sns.distplot)
  </code></pre>
  
  <p>Is there a way in seaborn 0.6.0 to use more color scales in the kdeplot of map_lower according to hue?</p>
  
  <p>In this case, hue has only 2 values. Maybe I'm missing something obvious.</p>