Replaced my HID bulbs with
4500K bulbs from DDM. Wasn't expecting a whole lot at $25 for the pair, but I'm really liking them. Plus they apparently have a lifetime warranty.
I guess I didn't realize how dim the originals had become. The 4500K temp looked a little yellow at first, but after breaking them in a bit they're doing great. It's a very white color, with less blue than the phillips bulbs I took out. About 75% of my commute these days is in the dark, so this should be a big improvement. Feels like the brights are on all the time!