(require 'eww)
;;; [2014-11-17 Mon]背景・文字色を無効化する
(defvar eww-disable-colorize t)
(defun shr-colorize-region--disable (orig start end fg &optional bg &rest _)
  (unless eww-disable-colorize
    (funcall orig start end fg)))
(advice-add 'shr-colorize-region :around 'shr-colorize-region--disable)
(advice-add 'eww-colorize-region :around 'shr-colorize-region--disable)
(defun eww-disable-color ()
  "ewwで文字色を反映させない"
  (interactive)
  (setq-local eww-disable-colorize t)
  (eww-reload))
(defun eww-enable-color ()
  "ewwで文字色を反映させる"
  (interactive)
  (setq-local eww-disable-colorize nil)
  (eww-reload))