IntelliJ 12 Darcula + Monokai
Loïc Descotte shared via Twitter an excellent color scheme for IntelliJ inspired by Monokai color scheme.
You can grab it at the following link (Monokai color scheme) or get the complete corresponding settings jar file here.
Setup is simple, under OS X you have to do the following (and then select the corresponding color scheme in settings) : Or you can simply import the jar containing the settings via the File > Import Settings... menu item in IntelliJ. The next time you'll restart your IDE, you should notice the change. The only thing I changed is the font size, 14pt is too big for me, I turned it to 12pt.