LiveJournal recently added a feature I've wanted for years (and mentioned in suggestions a few times). In case you haven't noticed: the "add/modify friend" page now has a full color picker. You can choose any of 3-byte RGB value for foreground and background for any friend. This was available through some LJ clients for a long time, but now it's available through the web interface.
I'm sticking to web-safe colors, but that's still a lot more than the meager 46 they had on the web interface before. I'm wasting this rainy afternoon away picking new, more fitting colors, for my LJ friends :)
[Edit: For example, I just made sunspiral the same color as his hair! Whee!]