I had 8000K HID's on my IS300 with stock yellow fogs and the combo produced a greenish light together. With the 10,000K, this might be more pronounced.MustGoFastR said:I have PIAA Ion Yellows (Japanese market H-131) and just used the rings from the stock bulbs; no water at all in the housings. A lot of people prefer to go for the matched look, but I went for true fog functionality and these work great. I only run them when it's foggy. Be interesting to see how they look/react with the 10k HID's.