So I plugged my phone in last night when I went to bed, with still at least 50% charge left. I woke up in the middle of the night, looked over, and the LED was flashing white. Looking at the display, the phone was now fully charged, and I had a new text message, Facebook message, and email. These all normally flash green. I've read here that the white light sometimes signifies the death of the phone due to the battery becoming fully depleted, but I've never had the phone anywhere near that low.
So any guesses on the white light? Or did I maybe dream the entire thing?