Sam the BMW man

Has anyone run into this problem? I noticed as I left from work my left headlight seemed discolored. Normally the xenons have a bright white bluish tint but while driving down my street I noticed almost an orangish tint. I got out of my car when I was in my driveway and there is defn a difference in the 2 headlights. Has anyone experienced this? I dont know if its a 1x thing or if the headlight has gone bad? Its a 2005 so I would think its not time to replace the xenon. Anyone with info would be greatly appreciated!