Change search results colors (also affects selection)

@dinhviethoa

To address #2488. Might not be the best color selection, but at least it's visible, and we can iterate.

![screen shot 2014-06-11 at 10 10 52 pm](https://cloud.githubusercontent.com/assets/5606182/3254185/7806db1a-f1f0-11e3-9640-2657ce8fdeec.png)
![screen shot 2014-06-11 at 10 11 15 pm](https://cloud.githubusercontent.com/assets/5606182/3254186/7da9c672-f1f0-11e3-90df-5908dd1e0e4b.png)