I've noticed there are tons of brilliantly subtle ways the site encodes information. For example: if an answer's been accepted the number of answers on the main screen is colored green, or if
you've voted up a question a question contains one of your interesting tags, the entire row goes blue.
Is there a description of all these little UI Easter Eggs, either on the main StackExchange site, in the FAQ or on the meta page? I've looked and cannot find anything, but this is also the only StackExchange site I use. If such a description existed, I think I'd be able to use the site more efficiently, as would others--especially newbies.
So I'm opening this question in case such a thing already exists. If it does I think we should link to it from the B&CG FAQ and if not we should add this info to the FAQ directly.