Why does one of my HID bulbs seem like it has more color than the other?

k so i just bought a new HID 6000k kit and i finished putting it in today. i check the lights at night and one of the bulbs has more blue than the other bulb that happens to be white. is this a mistake in which i got two different bulbs or is there some way to adjust it to make the other bulb look blue too???
Why does one of my HID bulbs seem like it has more color than the other?
You could have a faulty globe. But check first if the side which is not a bright has a good earth, this is the cable going to the body.(metal) or called minus.

lily