Placed yellow overlays on my fogs. It's pretty easy to install and you do need a heat gun as the fog lights do have a concave shape to them and you will need to shrink them a bit so it takes the shape of the light. Enjoy and I hope you like.

Day Shots




Night shots


Fogs off, lights on




No flash used in this shot







See the yellow tint in the ground from the overlays

 

I wonder how the heat will affect them?
Also putting another layer of film on outside of fog light will make them less bright, but yours looks good.

I prefer yellow bulbs on my Mazda 6.

 

I never did see a loss of light output, it even seemed to get better during foggy weather. I did this setup on my previous car, and had them on it for 11 years with no issues or problems. Matter of fact the layer of vinyl helped protect from stones that would occasionally crack or chip the fog light lens.

 

Yellow lighting is better for fog.
do you have HiD fogs? I don't.