Has anyone tried using Daniel Stern's DIY 'Selective Yellow' method on the factory fog lights? His article suggests using Dupli-Color Metalcast Yellow. My fog lights lenses could use a nice refurbishing as they've oxidized over the years. I think while I have the lenses out, I'm going to try Stern's method. A hundred years ago when I first got into cars, I can remember old school fogs being yellow, not clear...and they actually helped in adverse weather conditions.