const QColor Trace::BrightGrayBGColor = QColor(0, 0, 0, 10 * 255 / 100);
const QColor Trace::DarkGrayBGColor = QColor(0, 0, 0, 15 * 255 / 100);
const QColor Trace::BrightGrayBGColor = QColor(0, 0, 0, 10 * 255 / 100);
const QColor Trace::DarkGrayBGColor = QColor(0, 0, 0, 15 * 255 / 100);