diff --git a/emacs/emacs b/emacs/emacs
index 9c47bf6..bd7859c 100644
--- a/emacs/emacs
+++ b/emacs/emacs
@@ -1,4 +1,7 @@
+;;;; init.el                                     -*- lexical-binding: t; -*-
+
 (require 'package)
+
 ;;; either the stable version:
 (add-to-list 'package-archives
 	     ;; choose either the stable or the latest git version:
@@ -50,3 +53,25 @@
 (setq-default fill-column 80)
 (define-globalized-minor-mode global-fci-mode fci-mode (lambda () (fci-mode 1)))  
 (global-fci-mode 1)
+
+;; change mode-line color by evil state
+; (let ((default-color (cons (face-background 'mode-line)
+;                            (face-foreground 'mode-line))))
+;     (add-hook 'post-command-hook
+;     (lambda ()
+; 	(let ((color (cond ((minibufferp) default-color)
+; 			((evil-insert-state-p) '("#545454" . "#ffffff"))
+; 			((evil-emacs-state-p)  '("#444488" . "#ffffff"))
+; 			((buffer-modified-p)   '("#303030" . "#ffffff"))
+; 			(t default-color))))
+; 	(set-face-background 'mode-line (car color))
+; 	(set-face-foreground 'mode-line (cdr color))))))
+
+(require 'powerline)
+(powerline-center-evil-theme)
+
+(define-key evil-normal-state-map (kbd "C-w <down>") 'evil-window-down)
+(define-key evil-normal-state-map (kbd "C-w <up>") 'evil-window-up)
+(define-key evil-normal-state-map (kbd "C-w <right>") 'evil-window-right)
+(define-key evil-normal-state-map (kbd "C-w <left>") 'evil-window-left)
+(define-key evil-normal-state-map (kbd "-") 'find-file)