Solarized
Earlier this week I discovered Solarized, "a sixteen color palette […] designed for use with terminal and gui applications".
Bundles are available for all the popular editors; I went ahead and cloned the Coda bundle. While the code on my screen immediately looked very nice, a few of Justin's colour choices didn't sit well with me.* I spent an hour or two trying a large number of different combinations until my JavaScript file was harmoniously highlighted.

- Solarized code snippet
I wanted an even intensity, but didn't allow myself to deviate from Ethan's prescribed colours. I'm happy with the result: the soft highlighting makes the code easier to understand without being a distraction. Only regular expression literals leap forward, but these tend to occur infrequently.
Coda users may be surprised to see method invocations highlighted. That's one of the minor enhancements I've made to the default mode. If you're interested, have a look at Javascript.mode on Bitbucket.
* Blue escape sequences within red regular expression literals are too striking for my liking!
