Hella makes only one kit for all the different style bulbs, mine in particular is the 9006, many companies use their balasts and have several types of colored bulbs.

For an FYI, those of you who think that the color spectrum is 4300K to like 1200K, which is what some manufacturers advertise, you'll be interested to know, that the only light spectrum for HID light is between like 6400 and 7500 degrees Kelvin, anything higher then that is out of the visible light spectrum, and anything much lower then that wouldn't be a biproduct of burning Xenon gas. The reason why bulbs often appear more or less purple is because the gas mixture, or on some a purple coating, they are not any more bright, in fact if they are a higher Kelvin temp, they shed less visible light. The reason why some Mercedes, Audis, and other cars with HIDs from the factory, can appear to have a purple or violet tint to them, is the optics of the projectors at certain angles appear to be a violet color.

Later,

Aj