title: Change the color for ytick labels in seaborn.clustermap
body: <p>Is it possible to change the colors of the ytick labels in seaborn.clustermap?</p>
  
  <p>So for the <a href="http://seaborn.pydata.org/generated/seaborn.clustermap.html" rel="noreferrer">seaborn Iris example</a>, it is possible to set row colors based on species and plot a clustermap:</p>
  
  <pre><code>import seaborn as sns
  iris = sns.load_dataset("iris")
  species = iris.pop("species")
  lut = dict(zip(species.unique(), "rbg"))
  row_colors = species.map(lut)
  g = sns.clustermap(iris)
  </code></pre>
  
  <p>And it is possible to get a 1-1 correspondence between the plotted row and row label:</p>
  
  <pre><code>g.ax_heatmap.yaxis.get_majorticklabels()
  </code></pre>
  
  <p>Is there anyway to use this to recolor the ytick labels based on row_colors?</p>