Update visual style to match NGW.

NGW style has recently been updated, following changes follow the trend. 

Current:
![screen shot 2014-08-18 at 13 11 34](https://cloud.githubusercontent.com/assets/615085/3951083/e15b5e46-26d0-11e4-92f2-b4fd76a7c675.png)

Improved:
![screen shot 2014-08-18 at 12 56 19](https://cloud.githubusercontent.com/assets/615085/3950993/6510d218-26cf-11e4-97a0-97ec4a069718.png)