Stuntrally Icons colour fixes

Sliiiiiightly milder colouring.
Before:
![sr-editor-before](https://cloud.githubusercontent.com/assets/7050624/5400188/1e5f9bb2-8172-11e4-9c18-78f2c165b16e.png)
![stuntrally-before](https://cloud.githubusercontent.com/assets/7050624/5400191/21a742ac-8172-11e4-9f20-1028ca1a4ee4.png)
After:
![sr-editor](https://cloud.githubusercontent.com/assets/7050624/5400195/271776e4-8172-11e4-8c1f-9d0a54c0375f.png)
![stuntrally](https://cloud.githubusercontent.com/assets/7050624/5400202/2b463c5a-8172-11e4-8fda-3bc83a601d65.png)