Add my theme and setup a ZSH_CUSTOM directory.

zsh_custom/themes/matir.zsh-theme

@@ -0,0 +1 @@
+PROMPT="%{%(!.$fg[red].$fg[green])%}%n%{$fg[white]%}@%{$fg[cyan]%}%m%{$fg[white]%}:%{$fg[green]%}%32<...<%~%<<%{$fg[white]%}%#%{$reset_color%} "

zshrc

@@ -32,17 +32,10 @@ alias ls='ls --color'
 if [ -d $HOME/.oh-my-zsh ] ; then
   ZSH=$HOME/.oh-my-zsh
   ZSH_THEME="matir"
-  ORIG_PS1="${PS1}"
-  if [[ ! -a $ZSH/themes/$ZSH_THEME ]] ; then
-    ZSH_THEME=""
-  fi
+  ZSH_CUSTOM="$HOME/.dotfiles/zsh_custom"
   plugins=(git encode64 gpg-agent pep8 pip python tmux urltools extract sudo)
   source $ZSH/oh-my-zsh.sh
   unset ZSH_THEME
-  if [[ "$PS1" == "%n@%m:%~%# " ]] ; then
-    PS1="${ORIG_PS1}"
-  fi
-  unset ORIG_PS1
 fi
 
 # Keybindings