I'm glad you asked. I roll with a crew that's 10x faster than me, borderline trophy trucks wheeling, overlanding, etc... when flying through the night behind someone's dust trail white lights reflect dust like it does with snow. The yellow fog lights cut through all that especially when it's lower than the visible point of view of the driver. Hence, replacing the fog lights with these.
I have white floods behind the grill and a spot/flood combo FRO light bar up top. So, in the video, you get to see a preview of most of my lights. All of which I run when I'm not behind a cloud of dust.
I added the same lights to my LR4 but the white/clear lenses. They are OK, but feeling like yellow may give that additional contrast for offroad. Dust and such mentioned earlier. I won’t drive the vehicle much in the CO winter so they won’t benefit snow driving. The clear lenses do supplement the standard headlights for road driving...but not as much as I hoped. Think I just talked myself into swapping for yellow lenses..