I just got some PIAA Super Plasmas. How come they're not as purple as I thought they would be? They are a LOT brighter than regular bulbs, but I wanted that rich purple hue. What can give me that purple hue? I like Audi's HID systems. They seem to change colors from all angles. What kinda of bulbs will give me that effect? I heard there were some out there and have seen some, but don't know who makes them. Thanks guys. Merry X-mas!!!