Fix the syntax for Type

## before

![before](https://cloud.githubusercontent.com/assets/629993/3943967/6685395c-25dc-11e4-8eb9-47390bf20c56.png)

- Argument of the function is also recognized as a `Type`
- The color of `Number` of the argument is inappropriate

## after

![after](https://cloud.githubusercontent.com/assets/629993/3943968/6997bac0-25dc-11e4-96cc-d4ab3da0990e.png)