[theme]
background=#000000
text=#87ca00
border=#87ca00
slider=#ffff7f

I need to retrieve the value of each key. This is my attempt

    settings = new QSettings(QDir::currentPath() + "/config.ini", QSettings::IniFormat);
    settings->beginGroup("theme");
    QStringList keys = settings->childKeys();
    for (int i=0; i < keys.size(); i++) {
        QString value = "theme/";
        value.append(keys.at(i));
        qDebug() << "key" << keys.at(i) << settings->value(value).toString();
    }
    settings->endGroup();

The output is

key "background" ""
key "border" ""
key "slider" ""
key "text" ""

As you can see, the text corresponding to the key value is empty.
Where am I doing wrong?