Upgrade oh-my-zsh custom plugins and themes (add to the end of .oh-my-zsh/tools/upgrade.sh)

upgrade.sh

printf "\n${BLUE}%s${NORMAL}\n" "Updating custom plugins and themes"
for plugin in custom/*/*/; do
  if [ -d "$plugin/.git" ]; then
     printf "${YELLOW}%s${NORMAL}\n" "${plugin%/}"
     git -C "$plugin" pull
  fi
done
printf "${BLUE}%s${NORMAL}\n" "Hooray! Custom plugins and themes have been updated and/or are at the current version."