A personal opinion: I really do not like these ones. The yellow/orange tint seems random (even though it's probably from the C in the Caudata.org logo), and the font is more something I want to see in a newspaper. "NEW! Material" is more information than I need, just a subtle "new" would do, everyone is aware they are visiting a forum that contains old and new posts. I'd say: K.I.S.S! (Keep It Simple, Stupid, the most valuable lesson I had in design classes.)
I don't want to offend anyone but this is my honest argumentation.