Fix YES/NO selection color in save dialog

Before
![screen00031](https://f.cloud.github.com/assets/3000282/792881/77d6f8a8-ebcc-11e2-96d1-f06b1474bbe4.jpg)


After
![screen00032](https://f.cloud.github.com/assets/3000282/792882/7a82ede6-ebcc-11e2-95f9-d9735b6fabd1.jpg)