Method secondColorChanged

src/frontend/widgets/BackgroundWidget.cpp:297–302

}

void BackgroundWidget::secondColorChanged(const QColor& c) {
	CONDITIONAL_LOCK_RETURN;

	for (auto* background : m_backgrounds)
		background->setSecondColor(c);
}

void BackgroundWidget::opacityChanged(int value) {
	CONDITIONAL_LOCK_RETURN;