suite/themes/classic/messenger/folderPaneExtras.css

/* This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

/* distributors / ISPs can override folder pane icons
 * see http://www.mozilla.org/mailnews/arch/folderpaneextras.html
 */