title: networkx: set different alpha for each node?
body: <p>I want to set a different alpha for each node. It's easy to set a different color for each node but alpha only excepts a single value. Anyone know how to do this? </p>
  
  <p>(My goal is to have a color gradient from blue to red. If the value is below the midpoint it's blue and if above it's red. Alpha would set the gradient.)</p>
  
  <pre><code>nx.draw_networkx_nodes(g,pos=pos,nodelist=nodelist, 
  node_color=node_color, alpha=1.0)
  </code></pre>