diff --git a/bullet-train.zsh-theme b/bullet-train.zsh-theme
index dba5a22..a75b026 100644
--- a/bullet-train.zsh-theme
+++ b/bullet-train.zsh-theme
@@ -15,61 +15,154 @@
 
 VIRTUAL_ENV_DISABLE_PROMPT=true
 
-BULLETTRAIN_PROMPT_CHAR="\$"
-BULLETTRAIN_PROMPT_ROOT=true
+# PROMPT
+if [ ! -n "${BULLETTRAIN_PROMPT_CHAR+1}" ]; then
+  BULLETTRAIN_PROMPT_CHAR="\$"
+fi
+if [ ! -n "${BULLETTRAIN_PROMPT_ROOT+1}" ]; then
+  BULLETTRAIN_PROMPT_ROOT=true
+fi
 
-BULLETTRAIN_STATUS_BG=black
-BULLETTRAIN_STATUS_FG=default
+# STATUS
+if [ ! -n "${BULLETTRAIN_STATUS_BG+1}" ]; then
+  BULLETTRAIN_STATUS_BG=black
+fi
+if [ ! -n "${BULLETTRAIN_STATUS_FG+1}" ]; then
+  BULLETTRAIN_STATUS_FG=default
+fi
 
-BULLETTRAIN_TIME_SHOW=true
-BULLETTRAIN_TIME_BG=''
-BULLETTRAIN_TIME_FG=''
+# TIME
+if [ ! -n "${BULLETTRAIN_TIME_SHOW+1}" ]; then
+  BULLETTRAIN_TIME_SHOW=true
+fi
+if [ ! -n "${BULLETTRAIN_TIME_BG+1}" ]; then
+  BULLETTRAIN_TIME_BG=''
+fi
+if [ ! -n "${BULLETTRAIN_TIME_FG+1}" ]; then
+  BULLETTRAIN_TIME_FG=''
+fi
 
-BULLETTRAIN_VIRTUALENV_SHOW=true
-BULLETTRAIN_VIRTUALENV_BG=yellow
-BULLETTRAIN_VIRTUALENV_FG=white
-BULLETTRAIN_VIRTUALENV_PREFIX=🐍
+# VIRTUALENV
+if [ ! -n "${BULLETTRAIN_VIRTUALENV_SHOW+1}" ]; then
+  BULLETTRAIN_VIRTUALENV_SHOW=true
+fi
+if [ ! -n "${BULLETTRAIN_VIRTUALENV_BG+1}" ]; then
+  BULLETTRAIN_VIRTUALENV_BG=yellow
+fi
+if [ ! -n "${BULLETTRAIN_VIRTUALENV_FG+1}" ]; then
+  BULLETTRAIN_VIRTUALENV_FG=white
+fi
+if [ ! -n "${BULLETTRAIN_VIRTUALENV_PREFIX+1}" ]; then
+  BULLETTRAIN_VIRTUALENV_PREFIX=🐍
+fi
 
 # NVM
 if [ ! -n "${BULLETTRAIN_NVM_SHOW+1}" ]; then
   BULLETTRAIN_NVM_SHOW=true
 fi
-BULLETTRAIN_NVM_BG=green
-BULLETTRAIN_NVM_FG=white
-BULLETTRAIN_NVM_PREFIX="⬡ "
+if [ ! -n "${BULLETTRAIN_NVM_BG+1}" ]; then
+  BULLETTRAIN_NVM_BG=green
+fi
+if [ ! -n "${BULLETTRAIN_NVM_FG+1}" ]; then
+  BULLETTRAIN_NVM_FG=white
+fi
+if [ ! -n "${BULLETTRAIN_NVM_PREFIX+1}" ]; then
+  BULLETTRAIN_NVM_PREFIX="⬡ "
+fi
 
-BULLETTRAIN_RVM_SHOW=true
-BULLETTRAIN_RVM_BG=magenta
-BULLETTRAIN_RVM_FG=white
-BULLETTRAIN_RVM_PREFIX=♦️
+# RMV
+if [ ! -n "${BULLETTRAIN_RVM_SHOW+1}" ]; then
+  BULLETTRAIN_RVM_SHOW=true
+fi
+if [ ! -n "${BULLETTRAIN_RVM_BG+1}" ]; then
+  BULLETTRAIN_RVM_BG=magenta
+fi
+if [ ! -n "${BULLETTRAIN_RVM_FG+1}" ]; then
+  BULLETTRAIN_RVM_FG=white
+fi
+if [ ! -n "${BULLETTRAIN_RVM_PREFIX+1}" ]; then
+  BULLETTRAIN_RVM_PREFIX=♦️
+fi
 
-BULLETTRAIN_DIR_SHOW=true
-BULLETTRAIN_DIR_BG=blue
-BULLETTRAIN_DIR_FG=white
-BULLETTRAIN_DIR_EXTENDED=true
+# DIR
+if [ ! -n "${BULLETTRAIN_DIR_SHOW+1}" ]; then
+  BULLETTRAIN_DIR_SHOW=true
+fi
+if [ ! -n "${BULLETTRAIN_DIR_BG+1}" ]; then
+  BULLETTRAIN_DIR_BG=blue
+fi
+if [ ! -n "${BULLETTRAIN_DIR_FG+1}" ]; then
+  BULLETTRAIN_DIR_FG=white
+fi
+if [ ! -n "${BULLETTRAIN_DIR_EXTENDED+1}" ]; then
+  BULLETTRAIN_DIR_EXTENDED=true
+fi
 
-BULLETTRAIN_GIT_SHOW=true
-BULLETTRAIN_GIT_BG=white
-BULLETTRAIN_GIT_FG=black
-BULLETTRAIN_GIT_EXTENDED=true
+# GIT
+if [ ! -n "${BULLETTRAIN_GIT_SHOW+1}" ]; then
+  BULLETTRAIN_GIT_SHOW=true
+fi
+if [ ! -n "${BULLETTRAIN_GIT_BG+1}" ]; then
+  BULLETTRAIN_GIT_BG=white
+fi
+if [ ! -n "${BULLETTRAIN_GIT_FG+1}" ]; then
+  BULLETTRAIN_GIT_FG=black
+fi
+if [ ! -n "${BULLETTRAIN_GIT_EXTENDED+1}" ]; then
+  BULLETTRAIN_GIT_EXTENDED=true
+fi
 
-BULLETTRAIN_CONTEXT_SHOW=true
-BULLETTRAIN_CONTEXT_BG=black
-BULLETTRAIN_CONTEXT_FG=default
+# CONTEXT
+if [ ! -n "${BULLETTRAIN_CONTEXT_SHOW+1}" ]; then
+  BULLETTRAIN_CONTEXT_SHOW=true
+fi
+if [ ! -n "${BULLETTRAIN_CONTEXT_BG+1}" ]; then
+  BULLETTRAIN_CONTEXT_BG=black
+fi
+if [ ! -n "${BULLETTRAIN_CONTEXT_FG+1}" ]; then
+  BULLETTRAIN_CONTEXT_FG=default
+fi
 
-ZSH_THEME_GIT_PROMPT_PREFIX=" \ue0a0 "
-ZSH_THEME_GIT_PROMPT_SUFFIX=""
-ZSH_THEME_GIT_PROMPT_DIRTY=" ✘"
-ZSH_THEME_GIT_PROMPT_CLEAN=" ✔"
-ZSH_THEME_GIT_PROMPT_ADDED=" %F{green}✚%F{black}"
-ZSH_THEME_GIT_PROMPT_MODIFIED=" %F{blue}✹%F{black}"
-ZSH_THEME_GIT_PROMPT_DELETED=" %F{red}✖%F{black}"
-ZSH_THEME_GIT_PROMPT_UNTRACKED=" %F{yellow}✭%F{black}"
-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=" ⬍"
+# GIT PROMPT
+if [ ! -n "${ZSH_THEME_GIT_PROMPT_PREFIX+1}" ]; then
+  ZSH_THEME_GIT_PROMPT_PREFIX=" \ue0a0 "
+fi
+if [ ! -n "${ZSH_THEME_GIT_PROMPT_SUFFIX+1}" ]; then
+  ZSH_THEME_GIT_PROMPT_SUFFIX=""
+fi
+if [ ! -n "${ZSH_THEME_GIT_PROMPT_DIRTY+1}" ]; then
+  ZSH_THEME_GIT_PROMPT_DIRTY=" ✘"
+fi
+if [ ! -n "${ZSH_THEME_GIT_PROMPT_CLEAN+1}" ]; then
+  ZSH_THEME_GIT_PROMPT_CLEAN=" ✔"
+fi
+if [ ! -n "${ZSH_THEME_GIT_PROMPT_ADDED+1}" ]; then
+  ZSH_THEME_GIT_PROMPT_ADDED=" %F{green}✚%F{black}"
+fi
+if [ ! -n "${ZSH_THEME_GIT_PROMPT_MODIFIED+1}" ]; then
+  ZSH_THEME_GIT_PROMPT_MODIFIED=" %F{blue}✹%F{black}"
+fi
+if [ ! -n "${ZSH_THEME_GIT_PROMPT_DELETED+1}" ]; then
+  ZSH_THEME_GIT_PROMPT_DELETED=" %F{red}✖%F{black}"
+fi
+if [ ! -n "${ZSH_THEME_GIT_PROMPT_UNTRACKED+1}" ]; then
+  ZSH_THEME_GIT_PROMPT_UNTRACKED=" %F{yellow}✭%F{black}"
+fi
+if [ ! -n "${ZSH_THEME_GIT_PROMPT_RENAMED+1}" ]; then
+  ZSH_THEME_GIT_PROMPT_RENAMED=" ➜"
+fi
+if [ ! -n "${ZSH_THEME_GIT_PROMPT_UNMERGED+1}" ]; then
+  ZSH_THEME_GIT_PROMPT_UNMERGED=" ═"
+fi
+if [ ! -n "${ZSH_THEME_GIT_PROMPT_AHEAD+1}" ]; then
+  ZSH_THEME_GIT_PROMPT_AHEAD=" ⬆"
+fi
+if [ ! -n "${ZSH_THEME_GIT_PROMPT_BEHIND+1}" ]; then
+  ZSH_THEME_GIT_PROMPT_BEHIND=" ⬇"
+fi
+if [ ! -n "${ZSH_THEME_GIT_PROMPT_DIVERGED+1}" ]; then
+  ZSH_THEME_GIT_PROMPT_DIVERGED=" ⬍"
+fi
 
 # ------------------------------------------------------------------------------
 # SEGMENT DRAWING