For me it depends on whether my system is set to dark mode or light mode. If it is dark mode, it is light text on a dark background. With light mode, it is rea

For me it depends on whether my system is set to dark mode or light mode. If it is dark mode, it is light text on a dark background. With light mode, it is reasonably dark text on a light background. Maybe on Firefox it is taking the light-mode backgroud with the dark-mode text.