gecko/toolkit/themes/winstripe/global/customizeToolbar.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/. */

window,
dialog {
  padding: 6px;
}

#instructions {
  font-weight: bold;
  font-size: larger;
}

#palette-box {
  -moz-appearance: listbox;
  margin: 0 0 10px;
}

#palette-box > toolbarpaletteitem {
  padding: 8px 2px;
  margin: 0 8px;
}