Fixed iOS7 gray table background

Before fix:
![2013-11-18 22 23 00](https://f.cloud.github.com/assets/702124/1565569/323dcb40-5081-11e3-9bfa-3513da6d507e.png)
After fix:
![2013-11-18 22 43 13](https://f.cloud.github.com/assets/702124/1565578/508df3c2-5081-11e3-90db-ed246eeafc1d.png)