What is the difference between the red icons, and the white ones? I am seeing no pattern as to what the colors mean.
Red means that it’s a “hot” topic -> I think hot means that it has a X amount of replies 
yep, what he^ said, although I cant remember the number of posts that make it turn red.
ps. there is a key at the bottom of the forum;)
hmm, I see what you mean, maybe it depends on number of post or the speed of reply or both.
I’ve been there done that, its always the way though:)