Improved logging, color carries information.

Instead of request logs cycling through colours, bits of log information are assigned appropriate colours for easier scanning.

ie. 
GET methods are all blue, 
200 status codes are all green.

![request-logger-output](https://cloud.githubusercontent.com/assets/723683/3991681/836c5a60-28e7-11e4-9c94-2c94eb22a637.png)