I like the stoplight colors. I can't say that I've never looked at two shades of red next to each other and wondered about the difference, but I'm not sure knowing the difference at a glance is really that important. To me, the five dots are mostly a representation of the recent health of a cache. Any shade of red indicates something negative (DNF, disable, archive), while any shade of green indicates something positive (smiley, enable). If I really care to know which is which if there are multiple reds, I'm always going to tap through and read the logs for that, anyway.