Attribute colors

Proposing a fix for issue #4 by re-using the variable/parameter color to differentiate tag attributes. I believe a subtle difference between tag names and attributes enhances readability in htm and xml files.
![attributes](https://cloud.githubusercontent.com/assets/2543659/4964598/c975b9d6-6765-11e4-8f79-9c62b97df3d4.png)


While I’m at it also brings script tag punctuation in line with other tags.
![before](https://cloud.githubusercontent.com/assets/2543659/4964596/c1b56020-6765-11e4-9a78-17f5ae6b86f3.png)
![after](https://cloud.githubusercontent.com/assets/2543659/4964597/c3ebf390-6765-11e4-872b-8ee85ac9dc7a.png)