Change background to be a little less intense

From -

![image](https://cloud.githubusercontent.com/assets/1238468/4933879/d04151ce-659b-11e4-8f39-a52f7f3f59e2.png)

To -

![image](https://cloud.githubusercontent.com/assets/1238468/4933882/dd0cefa8-659b-11e4-9024-ed32be0010c1.png)