Something else that I have found that helps with oncoming headlights is to focus my eyes on the right curb (outside of the US it would be the left) or shoulder or whatever, and use peripheral vision. Depth perception still reeks, but I don't get blinded for nearly as long.
This also works well when dealing with thunderstorms, though the timing can get tricky.
Different people use different colours to see better, from what I have observed. There seems to be no "cure" colour, though saying there is may free your co-workers from having to think about it seriously.
--Coyote
"Every actual state is corrupt. Good men must not obey laws too well." -- Ralph Waldo Emerson
"To be governed is to be watched, inspected, directed, indoctrinated,
numbered, estimated, regulated, commanded, controlled, law-driven,
preached at, spied upon, censored, checked, valued, enrolled, by creatures
who have neither the right, nor the wisdom nor the virtue to do so."
-- Pierre-Joseph Proudhon
"I am,
indeed,
a king,
because I know how
to rule myself."
-- Pietro Aretino, 10 May 1537