I don't use VIM, so I'll answer about TextMate (although I'm going to try VIM and you should too). Install bundles for HAML, SASS and jQuery (assuming you're u

I don't use VIM, so I'll answer about TextMate (although I'm going to try VIM and you should too). Install bundles for HAML, SASS and jQuery (assuming you're using those tools). It gives you syntax coloring for each. Switch the theme to a light on dark to save your eyes from strain. You can download the theme from Railscasts.