got some mccoluch hids about a month ago, installed them and they looked great. it seemed like one day the left bulb changed colors, and now has a yellow tint instead of the 6000k blue. it has less light output and color than the other bulb, which hasnt faded colors or lost output at all. does the warranty on these kits cover this, and if not can i just buy a new set of bulbs and plug and play? thx