The city light I have is the newer M17 which is not just coated with blue tint, its the bulb it self. There's no way to make those city lights or foglights as white as the HIDs, they actually look yellow compare to my HIDs. If I had just the citylights and foglights on, they will look white, but once the 6000K HID is on, they turn yellow. The white balance on the pictures I took of those foglights and citylights were wrong, that's why they looked the same as the HIDs. Unless you get HID for all your lights, there's no way to match the color to the HID. Hope this helps.
-Bruce