I did use Yellow lenses and found that between the city lights glare and car lights my vision diminished especially at twilight.

I now use clear lenses at night.

You can purchase safety glasses which I get for $3.99-$10.00 in various lense colors and shades and look cool from directsafety.com.
They also sell vests not bicycling specific, but at a good value.

Once the glasses get scratched up, I trash em.

Rob