I have these in for my fog light bulbs. Bought these not knowing whether or not they would have the 'GT' look where the actual light looks yellow to oncoming traffic. It does not give it that 'look' of that yellow GT look of the bright yellow coming from the light, but up close and in the throw pattern on the ground directly in front of the car you can notice a yellow tint to the light hitting the ground. It does produce a slight but noticeable difference versus the stock bulbs in terms of total light output. Still have yet test them in snow or heavy fog at night, but for the money I think they were a decent upgrade over the stock fog light bulbs.
