title: Scipy dendrogram leaf label colours
body: <p>Is it possible to assign colours to leaf labels of dendrogram plots from Scipy? I can't figure it out from the <a href="http://docs.scipy.org/doc/scipy/reference/generated/scipy.cluster.hierarchy.dendrogram.html" rel="noreferrer">documentation</a>. Here's what I've tried so far:</p>
  
  <pre><code>from scipy.spatial.distance import pdist, squareform
  from scipy.cluster.hierarchy import linkage, dendrogram
  
  distanceMatrix = pdist(subj1.ix[:,:3])
  dendrogram(linkage(distanceMatrix, method='complete'), 
             color_threshold=0.3, 
             leaf_label_func=lambda x: subj1['activity'][x],
             leaf_font_size=12)
  </code></pre>
  
  <p>Thanks.</p>