mirror-chatterino2/resources/qss/settings.qss

* {
    font-size: <font-size>px;
}

QCheckBox::indicator {
    width: <checkbox-size>px;
    height: <checkbox-size>px;
}

QComboBox {
    width: 100px;
}

chatterino--TitleLabel {
    font-family: "Segoe UI light";
    font-size: 24px;
    color: #4FC3F7;
}

chatterino--TitleLabel2 {
    font-family: "Segoe UI light";
    font-size: 24px;
    color: #bbb;
}

chatterino--DescriptionLabel {
    color: #999;
}