I think very few members' stars are red or blue, or even missing (like Pablo). These are probably glitches or whatnot, since I think nothing has been done to fix it. It's probably not hard to fix this problem, actually; it was like it before, it can happen again.

EDIT: It seems that more colors are coming back. I'm seeing orange and black, too, but only on the members with titles (Programmer, Senior Mod, etc.).