I had the same problem with tmux and vim using solarized theme. The problem was solved with the help of this blog post: http://www.terminally-incoherent.com/blog/2012/10/17/vim-solarized-and-tmux/

My steps to solve this problem were:

1. Upgrade tmux to 2.0 version. (To see what your current version is use: tmux -V)

2. Add terminal support for 256 color mode (~/.bashrc): export TERM="screen-256color" alias tmux="tmux -2"

3. Tell tmux what terminal type should be used (~/.tmux.conf): set -g default-terminal "screen-256color"

4. Force vim to use 256 colors (~/.vimrc): set t_Co=256 " force vim to use 256 colors let g:solarized_termcolors=256 " use solarized 256 fallback

Restart terminal for changes to take effect.

I had the same problem with tmux and vim using solarized theme. The problem was solved with the help of this blog post: http://www.terminally-incoherent.com/blog/2012/10/17/vim-solarized-and-tmux/

My steps to solve this problem were:

1. Upgrade tmux to 2.0 version. (To see what your current version is use: tmux -V)

2. Add terminal support for 256 color mode (~/.bashrc):

   export TERM="screen-256color"
   alias tmux="tmux -2"
   

3. Tell tmux what terminal type should be used (~/.tmux.conf):

   set -g default-terminal "screen-256color"
   

4. Force vim to use 256 colors (~/.vimrc):

   set t_Co=256                        " force vim to use 256 colors
   let g:solarized_termcolors=256      " use solarized 256 fallback
   

Restart terminal for changes to take effect.