add hashkey symbol and punctuation color

before:
![before](https://f.cloud.github.com/assets/29762/2379764/9479e6ce-a89f-11e3-945b-82128a203566.png)

after:
![after](https://f.cloud.github.com/assets/29762/2379769/9bf83f54-a89f-11e3-80c9-da62456774b4.png)