DataTorrent/Malhar — pull request #342 by andyperlitch (2013-12-02 23:23:20+00:00)
Title: Fix for #328

Overlays in charts now have black background behind white text.
![screen shot 2013-12-02 at 3 22 46 pm](https://f.cloud.github.com/assets/1390651/1659682/aea30da8-5ba8-11e3-9a2b-51bf1bba07a6.png)