I'm running iterm2 and when I'm in tmux mode the colorscheme I have set in vim does not show up. Only the color scheme I've set in iterm. If I run vim from shell the colorscheme appears correct - its only when I'm in tmux mode.
I've tried setting :colorscheme molokai when in vim (see screenshot below) and it doesn't change - again, the default colorscheme for iterm2 remains.
Am I missing some setting to iterm or tmux.conf? My dotfles are up on github here.
I had the same problem. Only difference was I am using solarize rather then molokai.
To fix the issue, I have set up an alias in ~/.bashrc:
alias tmux="TERM=screen-256color-bce tmux"
And set up the default-terminal option in ~/.tmux.conf:
set -g default-terminal "xterm"
Lastly, do $ source ~/.bashrc to load new alias.