Russian Qt Forum

class Delegate : public QStyledItemDelegate
{
	Q_OBJECT
public:
	Delegate(){}
	void paint(QPainter *painter, const QStyleOptionViewItem &option, const QModelIndex &index) const
	{
		if (option.state & QStyle::State_Selected)
		{
	                QVariant var = index.model()->data(index, Qt::UserRole);
	                painter->setPen(QColor(Qt::white));  // это не обязательно
	                painter->fillRect(option.rect, var.value<QColor>());
			painter->drawText(option.rect, index.model()->data(index, Qt::DisplayRole).toString());
		}
		else
			QStyledItemDelegate::paint(painter, option, index);
	}
};

ui.listWidget->setItemDelegate(new Delegate());

QColor color = getMyData() ? QColor(Qt::darkGreen) : QColor(Qt::darkBlue);
myItem->setData(Qt::UserRole, color);

	
void paint(QPainter *painter, const QStyleOptionViewItem &option, const QModelIndex &index) const
{
	QStyleOptionViewItem myOpt(option);

	if (option.state & QStyle::State_Selected)
	{
		QPalette pal(myOpt.palette);
	        QVariant var = index.model()->data(index, Qt::UserRole);

	        pal.setColor(QPalette::Highlight,var.value<QColor>());
	        myOpt.palette = pal;
	}
	QStyledItemDelegate::paint(painter, myOpt, index);
}

QListView {
    color: rgb(127, 0, 63);
    background-color: rgb(255, 255, 241);
    selection-color: white;
    selection-background-color: rgb(191, 31, 0);
}