Function backgroundColor

kdevplatform/util/widgetcolorizer.cpp:99–104

}

std::optional<QColor> backgroundColor(const QTextFormat& format)
{
    if (!format.hasProperty(QTextFormat::BackgroundBrush))
        return std::nullopt;
    return format.background().color();
}

/**
 * Inverting is used for white colors, because it is assumed white in light color scheme