From what I know is that White-Face guages are either backlit or electroluminate(don't know how to spell, but it's kinda like Indiglo), and will sure be more visible during the night than top-lit W124 guages. However, those guages are very hard to find....
Let us know if you have more info on where to get those guages....
<LI>1992 Mercedes-Benz 400SE
<LI>Moonstone Grey/Black Leather