Marker colour still not showing up
<p>The markers produced by the following are just showing up as grey:</p>

<pre><code>plt.style.use('ggplot')
ax1.scatter(x
            , y
            , edgecolor='black'
            , color='black'
            , marker='x'
            , label='Cluster 1')
</code></pre>

<p>The marker probably looked grey because of the small line width, which can be controlled with the <code>linewidths</code> property:</p>

<pre><code>plt.scatter(1, 1, s=300, edgecolor='black', 
            color='black', marker='x')
plt.scatter(2, 2, s=300, edgecolor='black', 
            color='black', marker='x', linewidths=2)
</code></pre>

<p><a href="http://i.stack.imgur.com/XrUTD.png" rel="nofollow"><img src="http://i.stack.imgur.com/XrUTD.png" alt="enter image description here"></a></p>

python pandas matplotlib