For many moons I've been using vim and tmux with the desert theme, but things just didn't seem right, especially when I would try using zenburn. The colors were totally off.
I can't remember where I found the solution, but this is what's working for me:
Hope that helps.
I had an odd computer occurrence recently - my ctrl + shift key combo stopped working, so I could not longer copy and paste to and from terminal emulator windows.
It turns out that when I was troubleshooting zenburn I installed xterm to check out zenburn colors in it, and that was the culprit.