title: VIM not using proper colorscheme in tmux
body: <p>I have referred to this question and I tried many of the changes suggested and it worked for a moment. I updated my Ubuntu machine to latest version and it broke my tmux.
  <a href="https://stackoverflow.com/questions/10158508/lose-vim-colorscheme-in-tmux-mode">lose vim colorscheme in tmux mode</a></p>
  <p>Currently everything works perfectly outside of tmux but the vim in tmux is having problems.</p>
  <p>My vimrc :</p>
  <pre><code>call plug#begin('~/.vim/plugged')
  Plug 'arcticicestudio/nord-vim'
  Plug 'fatih/vim-go', { 'do': ':GoUpdateBinaries' }
  call plug#end()
  
  set termguicolors
  set hlsearch
  syntax on
  colorscheme nord
  </code></pre>
  <p>I have set these 2 variables in my bashrc</p>
  <pre><code>export TERM=&quot;xterm-256color&quot;
  alias tmux='tmux -2'
  </code></pre>
  <p>One ans suggested to add this <code>set -g default-terminal &quot;xterm&quot;</code> in tmux.conf but adding this loses all the colors in my tmux.</p>
  <p>I am using this <a href="https://github.com/lemnos/theme.sh" rel="nofollow noreferrer">https://github.com/lemnos/theme.sh</a> for setting colorscheme of my terminal.</p>
  <p>I don't understand what I'm doing wrong.</p>