WebEngineView - highlight issue.

I am trying to highlight the selected text in QWebEngineView.
Issue is all the matches are highlighted and along with the one I selected.
Also the color is some default color. The one I selected is one color and rest matches in "yellow"

Code:

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void applyHighlight(QString str, QString color)
{
    findText(str);
*   m_Color.setNamedColor(color.toUpper());
    QString clrName = m_Color.name();
    QLatin1String cmd = QLatin1String("HiliteColor");
    QString js = QString(QLatin1String("document.execCommand(\"%1\",false, \"%2\")")).arg(cmd).arg(clrName);
    page()->runJavaScript(js);
}

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Kindly help me to highlight only the text which I have selected.