My custom ZSH themes...

echelon.zsh

# echelon

function virtualenv_info {
    [ $VIRTUAL_ENV ] && echo '('`basename $VIRTUAL_ENV`') '
}

function box_name {
    hostname -s
}

function build_prompt {
  local current_dir='${PWD/#$HOME/~}'
  local git_info='$(git_prompt_info)'

  echo "[%{$FG[039]%}%*%{$reset_color%}] %{$FG[040]%}%n%{$reset_color%}%{$FG[239]%}@%{$reset_color%}%{$FG[033]%}$(box_name)%{$reset_color%}%{$FG[239]%}/%{$reset_color%}%{$terminfo[bold]$FG[006]%}${current_dir}%{$reset_color%} ${git_info} λ$(virtualenv_info)%(?.%{%F{green}%}.%{%F{red}%}✘) %{$reset_color%}"
}


PROMPT="$(build_prompt)"
ZSH_THEME_GIT_PROMPT_PREFIX=" %{$reset_color%}["
ZSH_THEME_GIT_PROMPT_SUFFIX="%{$reset_color%}]"
ZSH_THEME_GIT_PROMPT_DIRTY=" %{$FG[202]%}✘"
ZSH_THEME_GIT_PROMPT_CLEAN=" %{$FG[040]%}✔"

echelon2.zsh

# echelon2
NEWLINE='
'

ZSH_THEME_GIT_PROMPT_PREFIX="%{$FG[009]%}\ue0a0%{$reset_color%} "
ZSH_THEME_GIT_PROMPT_SUFFIX=""
ZSH_THEME_GIT_PROMPT_DIRTY=" %F{red}✘%{$reset_color%}"
ZSH_THEME_GIT_PROMPT_CLEAN=" %F{green}✔%{$reset_color%}"
ZSH_THEME_GIT_PROMPT_ADDED=" %F{green}✚%{$reset_color%}"
ZSH_THEME_GIT_PROMPT_MODIFIED=" %F{blue}✹%{$reset_color%}"
ZSH_THEME_GIT_PROMPT_DELETED=" %F{red}✖%{$reset_color%}"
ZSH_THEME_GIT_PROMPT_UNTRACKED=" %F{yellow}✭%{$reset_color%}"
ZSH_THEME_GIT_PROMPT_RENAMED=" ➜"
ZSH_THEME_GIT_PROMPT_UNMERGED=" ═"
ZSH_THEME_GIT_PROMPT_AHEAD=" ⬆"
ZSH_THEME_GIT_PROMPT_BEHIND=" ⬇"
ZSH_THEME_GIT_PROMPT_DIVERGED=" ⬍"

LINE1="%{$FG[039]%}╭─"
LINE2="%{$FG[039]%}╰─ "

function virtualenv_info {
  [ $VIRTUAL_ENV ] && echo '('`basename $VIRTUAL_ENV`') '
}

function box_name {
  echo "%{$FG[040]%}%n%{$FG[239]%}@%{$FG[033]%}$(hostname -s)"
}

function echelon_git_info {
  local git_info='$(git_prompt_info)'
  echo "${git_info}"
}

function end_prompt {
  echo "$LINE2%{$FG[255]$terminfo[bold]%}λ$(virtualenv_info)%(?.%{$FG[002]%}.%{$FG[001]%}✘)%{$reset_color%} "
}

function build_prompt {
  local current_dir='${PWD/#$HOME/~}'
  local git_info='$(git_prompt_info)'

  echo "$LINE1$(box_name) %{$terminfo[bold]$FG[006]%}${current_dir}%{$FG[255]%}$NEWLINE$(end_prompt)"
}

PROMPT="$(build_prompt)%{$reset_color%}"
RPROMPT="$(echelon_git_info) [%{$FG[039]%}%*%{$reset_color%}]"