paper-gtk-theme/Paper/gtk-3.0/apps/gnome-disks.css

/* Copyright 2014 Sam Hewitt.
*
* This file is part of the Paper GTK theme.
*
* The Paper GTK theme is free software: you can redistribute it
* and/or modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation, either version 3 of the
* License, or (at your option) any later version.
*
* The Paper GTK theme is distributed in the hope that it will be
* useful, but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General
* Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with the Paper GTK theme. If not, see http://www.gnu.org/licenses/.
*/

@define-color disks #9B26AF;

/**********
 * Header *
 **********/

GduWindow .titlebar,
GduWindow .header-bar {
    background-color: @disks;
}

GduWindow .titlebar:backdrop,
GduWindow .header-bar:backdrop {
    background-color: shade(@disks,0.9);
}

GduVolumeGrid *:active,
GduVolumeGrid *:focus,
GduVolumeGrid *:selected {
	background-color: @selection;
	color: @selection_foreground;
}