If you have never had them, fog lights are great. There are lots of complaints about the stock low beam projectors, so the fog lights are an improvement to them. Many owners have upgraded to either LED bulbs or gone to HID bulbs. The LED bulbs have a wide variety of beam patterns so shop carefully. Many of the cheaper ones are junk; their beam pattern is terrible. Probably a great enhancement for your Colorado weather. The OEM units from Toyota are kind of pricey and the biggest complaint seems to be that they use a very low wattage halogen bulb, an H16 that's only 19 watts. The stock units can be significantly improved by changing the bulbs to LED bulbs. Lots of lamps available on e-bay, some with LED bulbs in them already. If your car does not have them, then you need the lamp housing and the mounting bracket. The brackets are also available on e-bay as a separate item if desired. I would suggest getting the new fog lights, see how you like them, then get some small pieces of Lamin-X yellow stick on film. It will protect the lenses, but it will also give you some contrasting yellow light for the snow, rain and fog.I see several threads on how to install fog lights.
My question is how good are they? Are they a worthwhile improvement in lighting?
I have a 2017 LE