Is there a place where I can get Espresso Libre as a MacVim theme?
If you have the TextMate theme file, you can use this online converter to spit out a (Mac)Vim theme file for you: http://coloration.sickill.net/
It should do a pretty good job of converting it for you, as it did for the ones I've tried.
You'll probably be able to find something quite similar if not identical using vimcolorschemetest
This what you're looking for? http://eclipsecolorthemes.org/?view=theme&id=45