Originally Posted by faded-a-fool
Could it be because they are used at half power? Mine are like this as well. I have a feeling any bulb will brown over time.
I seriously doubt it, other Manufacturers DRL are 50-80% power also. Subaru may have gotten a bad batch from the supplier, who knows. But my guess that might be the case since the poster above was asked to send in the bulbs. The bulbs on our 2012 don't look like that at 25k.