revert back to a darker theme

fish/config.fish

@@ -8,9 +8,6 @@ if status is-interactive
   # Set the editor to use vim
   set --export --global EDITOR nvim
 
-  # Set the terminal
-  set --export --global TERM "screen-256color"
-
   # Install OMF if it is not already
   if test ! -d ~/.local/share/omf
     curl -L https://get.oh-my.fish | fish