I was coming home through DCA last night and saw one plane that had been repainted in the new livery -- except for the nose, which was still a rainbow of variously-hued blue stripes. (I believe it was N458UA, but my memory may be wrong -- I took a quick photo with my BB, but it's not very good and I'm not sure how to post it here anyway.)

Anyone else seen this? Any reason why the nose wouldn't be repainted?