// A slot to QListWidget's currentItemChanged
// The textColor was set on the QListWidgetItem as shown in the attached example main.cpp source code
void <some_class_slot>::currentItemChanged(QListWidgetItem *current, QListWidgetItem *previous) {
    if(current) {
        QPalette p = l->palette();
        p.setColor(QPalette::HighlightedText, current->textColor());
        l->setPalette(p);
    }
}