goldendict-ng/src/stylesheets/qt-lingoes-blue.css

MainWindow,
QToolBar {
  background-color: #cfddf0;
}

#wordList,
#dictsPane,
#dictsList,
#historyPane,
#historyList,
#favoritesPane,
#favoritesTree {
  background: #eaf0f8;
  color: darkblue;
}

MainWindow #menubar {
  background-color: qlineargradient(
    x1: 0,
    y1: 0,
    x2: 0,
    y2: 1,
    stop: 0 #f0f6ff,
    stop: 0.5 #d2e0f5,
    stop: 0.9 #dcebff,
    stop: 1 #f0f6ff
  );
}

MainWindow #menubar::item {
  padding: 2px 8px;
  background: transparent;
}

MainWindow #menubar::item:selected {
  /* when selected using mouse or keyboard */
  background: #839ec7;
}

MainWindow #menubar::item:pressed {
  background: #728aad;
}

MainWindow #centralWidget QTabBar::tab {
  border: 1px solid #667b9b;
  border-bottom-color: #667b9b;
  border-top-left-radius: 4px;
  border-top-right-radius: 4px;
  padding: 1px 3px;
  margin-left: 1px;
  margin-top: 2px;
  margin-bottom: 2px;
  background-color: #cfddf0;
  color: darkslategray;
}

MainWindow #centralWidget QTabBar::tab:selected {
  background-color: #839ec7;
  color: #fff;
  border-bottom-style: none;
}

ArticleView #searchFrame QMenu {
  background-color: none;
}
ArticleView QMenu {
  background-color: none;
}

QMainWindow::separator {
  width: 1px; /* when vertical */
  height: 1px; /* when horizontal */
}

#dictsPaneTitleBar {
  margin: 2px;
}

/* Colored header for the History Pane */
#historyPaneTitleBar {
  margin: 2px;
}

ScanPopup #outerFrame {
  background-color: #ceddef;
}

ScanPopup #dictionaryBar {
  background: #ceddef;
}