Echelon9 fix/monochrome status bar icon

This fixes the icon for yosemite's dark menu bar.
![yosemite dark](https://cloud.githubusercontent.com/assets/799345/4347940/17bdde9c-4174-11e4-9315-684ab0526f5d.png)

Default Yosemite theme for comparison
![yosemite light](https://cloud.githubusercontent.com/assets/799345/4347939/13f254d2-4174-11e4-9fe7-55a4e6b1ca26.png)

Unfortunately the unread count is truncated (it is 63 items, not 6)