Lightens the picker control

Before:
![screen shot 2014-11-05 at 5 55 25 pm](https://cloud.githubusercontent.com/assets/186715/4929759/110091fa-6558-11e4-9c30-91e65f1fe4e1.png)

After:
![screen shot 2014-11-05 at 5 55 38 pm](https://cloud.githubusercontent.com/assets/186715/4929760/14d4855c-6558-11e4-8ac9-b7d8c5d233f7.png)