I'm trying to make a scatter plot of some PCA data. I do some pretty typical code:

```
plt.plot(pca[:,0], pca[:,1], '.',ms=3,  markerfacecolor = self.colors[k],
            markeredgecolor = 'none')

```

I want it to show just the marker face color with no outline. The problem is that the markers disappear completely when markeredgecolor = 'none'. When I set markerfacecolor='none' or to a color and remove markeredgecolor, it works like expected.

I just updated matplotlib, numpy, etc. to the newest versions, running on Python 2.7.

Thanks for your help.