switch from using my own fork to using $ZSH_CUSTOM

zsh/custom/walkah.zsh-theme

@@ -0,0 +1,15 @@
+# walkah ZSH Theme
+
+if [ -z $SSH_CONNECTION ]; then HCOLOR="green"; else HCOLOR="blue"; fi
+local return_code="%(?..%{$fg[red]%}%? ↵%{$reset_color%})"
+
+PROMPT='%{$fg[$HCOLOR]%}%m%{$reset_color%}:%c \
+$(git_prompt_info)%{$fg[red]%}%(!.#.»)%{$reset_color%} '
+PROMPT2='%{$fg[red]%}\ %{$reset_color%}'
+RPS1='${return_code}'
+
+ZSH_THEME_GIT_PROMPT_PREFIX="%{$fg[green]%}±%{$fg[yellow]%}"
+ZSH_THEME_GIT_PROMPT_SUFFIX="%{$reset_color%} "
+ZSH_THEME_GIT_PROMPT_CLEAN=""
+ZSH_THEME_GIT_PROMPT_DIRTY="%{$fg[red]%}✗%{$reset_color%}"
+