If you find a theme that does the color-by-person thing well, I would love to know; I did a bunch of poking around years back and was unable to find anything remotely like I had on LJ. (My LJ with this username is an old, old S1 style; I had a fandom LJ that was set up in an S2 style that was similar, which possibly I could try to import, but the style system was too much work at the point when only like three of my friends had moved. Now it's a bit more urgent.)