I’m seeing more and more colors. Some are the blue lights, last night, I saw a car with the yellow head lights.

Slow down and you won't see so many blue lights. The yellow headlights probably have plastic covers that cooked in the sun for too long...

Lol… I’ll try.

anyways, those yellow lights were very bright, I doubt those cover oxidized.

It's the advent of LED headlights...

https://www.xenonpro.com/led-headlight-color-guide-choosing-best-color

I recall in the early 90’s the push to develop/invent White LEDs where it really would revolutionize the area of lighting… and low and behold…

And now their everywhere… such as Peterbilts.

Yellow "fog lights" were fairly common in the San Francisco area--mounted low on the front of the car. They could penetrate much further in the common fog near the Golden Gate, and had much less glare than standard headlights. This color in the monochromatic yellow from Low Pressure Sodium lights was used for decades on the Golden Gate Bridge.

JMM

I told a friend that wearing yellow tinted glasses was the same as yellow fog lights on the car for driving in fog.

He disagreed vehemently and never could understand how the yellow light from fog lights was created.

I used to have set of sunglasses with a yellow tint,mixed with some other tints,that were fantastic in bad weather.They were on a grab table for $2 so I picked them up,not expecting much.

I lost them and have not been able to find any other type that worked as well.

There were yellow tinted sunglasses, that helped reduce glare as well as enhanced clarity.

sport shooters have them. And they do help.

also, when I had a design and fabrication company, the shop lights were sodium based.

did a lot of high polished stainless for the food and dairy. When I first bought that building, the first few project, that were sent out, I had to send a crew, to take the weld discoloration off the process equipment we design.

the sodium lights in the shop basically made the weld color disappear. Until I could get replacement lights, we had to take the fabricated equipment outside for a visual inspection before loading them on a truck.