making post-info text brighter, refining category nav dropdown

![screenshot 2013-10-29 00 39 23](https://f.cloud.github.com/assets/1681963/1425992/3dcd9798-4054-11e3-9a3f-707c0a39c388.png)
![screenshot 2013-10-29 00 39 12](https://f.cloud.github.com/assets/1681963/1425991/3dcd41d0-4054-11e3-9000-2d8ae18d0a2d.png)


:crescent_moon: :star: