diff --git a/emacs.el b/emacs.el
index 7280c4b..88c0995 100644
--- a/emacs.el
+++ b/emacs.el
@@ -1047,6 +1047,23 @@ found, otherwise returns nil."
   (define-key company-active-map (kbd "C-s") 'company-filter-candidates)
   (define-key company-active-map (kbd "C-i") 'company-complete-selection)
   (define-key company-active-map (kbd "C-f") 'company-complete-selection)
+
+  ;; https://qiita.com/syohex/items/8d21d7422f14e9b53b17
+  (set-face-attribute 'company-tooltip nil
+                      :foreground "black" :background "lightgrey")
+  (set-face-attribute 'company-tooltip-common nil
+                      :foreground "black" :background "lightgrey")
+  (set-face-attribute 'company-tooltip-common-selection nil
+                      :foreground "white" :background "steelblue")
+  (set-face-attribute 'company-tooltip-selection nil
+                      :foreground "black" :background "steelblue")
+  (set-face-attribute 'company-preview-common nil
+                      :background nil :foreground "lightgrey" :underline t)
+  (set-face-attribute 'company-scrollbar-fg nil
+                      :background "orange")
+  (set-face-attribute 'company-scrollbar-bg nil
+                      :background "gray40")
+
   )