Fix "fog" in 3rd Birthday

The "fog" is basically the side effect of our current fake grey image .It can only be resolved by implmenting the video support . 

Before fix
![2](https://f.cloud.github.com/assets/3000282/492383/3ead3ec6-baa2-11e2-9a29-3a1d6148108b.jpg)

After fix
![1](https://f.cloud.github.com/assets/3000282/492386/8b3a3a3c-baa2-11e2-8975-27bfaa15d8e7.jpg)