they said John Force(of funny car drag race fame) switched to a dark visor and all of the sudden his reation times started to suck. They went back to a clear visor and he began cutting good lights again. Don't know if it's just psychological or whether the color really makes a diff. And dunno if it'll apply to road racing too, visibility & all.
-Arnel
"Enjoyin' My Z's!" :-) Site last updated 6/21/2001.