i have the same kit, so i went out and checked mine, and there are the same markings on my housings too. didnt ever notice it till now, thanks a lot j/k
i think its normal...i have some cheapo Eurlite bulbs (which have a slight purple tint to the bulb) which give out a nice white beam but nothing like HID's. WHen looking at the headlamp housing there was a sport that reflects the bulbs strangely and makes it look like the bulb is a different color.
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"Using a key to gouge expletives on another's vehicle is a sign of trust and friendship."
Might be your bulbs were tinted blue on the hid kit... to get the blue color. So that might be burning off and fumes hit right there, dying the glass reflector.
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