Slightly less transparent water. Requested by mugface

Before: 
![2013-05-04_15 27 20](https://f.cloud.github.com/assets/1957489/462597/4c22adce-b4c7-11e2-83a7-47e27d256510.png)

After: 
![2013-05-04_15 27 11](https://f.cloud.github.com/assets/1957489/462599/53871e6a-b4c7-11e2-9eab-4d44a1b1f5bd.png)