diff --git a/lib/git.zsh b/lib/git.zsh
index 8d38f326..32c55ead 100644
--- a/lib/git.zsh
+++ b/lib/git.zsh
@@ -36,7 +36,13 @@ function _omz_git_prompt_info() {
     && upstream=" -> ${upstream}"
   fi
 
-  echo "${ZSH_THEME_GIT_PROMPT_PREFIX}${ref:gs/%/%%}${upstream:gs/%/%%}$(parse_git_dirty)${ZSH_THEME_GIT_PROMPT_SUFFIX}"
+  local is_nix
+  if $(echo $PATH | grep "/nix/store" > /dev/null 2>&1); then
+    is_nix="nix@"
+  fi
+
+
+  echo "${ZSH_THEME_GIT_PROMPT_PREFIX}${is_nix}${ref:gs/%/%%}${upstream:gs/%/%%}$(parse_git_dirty)${ZSH_THEME_GIT_PROMPT_SUFFIX}"
 }
 
 function _omz_git_prompt_status() {
diff --git a/themes/afowler.zsh-theme b/themes/afowler.zsh-theme
index f6d3ef82..c1e59b4f 100644
--- a/themes/afowler.zsh-theme
+++ b/themes/afowler.zsh-theme
@@ -1,7 +1,7 @@
-PROMPT='%m %B%F{blue}:: %b%F{green}%3~ $(hg_prompt_info)$(git_prompt_info)%B%(!.%F{red}.%F{blue})»%f%b '
+PROMPT='%b%F{yellow}%m %B%F{black}:: %b%F{blue}%3~ $(hg_prompt_info)$(git_prompt_info)%B%(!.%F{red}.%F{black})»%f%b '
 RPS1='%(?..%F{red}%? ↵%f)'
 
-ZSH_THEME_GIT_PROMPT_PREFIX="%{$fg[yellow]%}‹"
+ZSH_THEME_GIT_PROMPT_PREFIX="%{$fg[red]%}‹"
 ZSH_THEME_GIT_PROMPT_SUFFIX="› %{$reset_color%}"
 
 ZSH_THEME_HG_PROMPT_PREFIX="%{$fg[magenta]%}hg:‹%{$fg[yellow]%}"