title: Foilum map module, trying to get more options for marker colors
body: <p>I am playing with Folium a lot right now and its really great to have something so easy to use in Python. But their documentation is seriously behind, which I understand. So I have 2 questions.</p>
  
  <ol>
  <li>What am I doing wrong in how I am trying to get more marker colors? Here is what I have tried:</li>
  </ol>
  
  <p><code>map.simple_marker(each_coord, popup=v[0], marker_color='#FFFF00')</code>
  <code>map.simple_marker(each_coord, popup=v[0], marker_color='yellow')</code>
  <code>map.simple_marker(each_coord, popup=v[0], marker_color='Yellow')</code></p>
  
  <p>They should all make the marker yellow, instead it stays default red. The only colors I can actually change to are red, green, and purple. In an example from the folium documentation it looks like we should be able to use html color codes:</p>
  
  <pre><code>folium.CircleMarker([45.5215, -122.6261],
                  radius=500,
                  popup='Laurelhurst Park',
                  color='#3186cc',
                  fill_color='#3186cc',
                 ).add_to(map_2)
  </code></pre>
  
  <p>But it doesn't work for me. Hope someone knows a way around this because I need at least 12 different colors for my project.</p>
  
  <ol start="2">
  <li>The way I am adding markers seems to be deprecated. It works, but I always get this warning: <code>FutureWarning: simple_marker is deprecated. Use add_children(Marker) instead</code> which I think might be related to why I can't get the colors to work. But their is nothing in any of the documentation or open discussions about how to use <code>add_children</code> Maybe someone with knowledge can clarify?</li>
  </ol>
  
  <p>Thanks</p>