Let me begin by saying I like the change in general!
As for the color coding, I have a humble proposal: to switch the notification field color to something less "angry" than red? (Or at least less moderat-y. At first, I thought I had been banned or moderated)
I like the general idea, but feel bright red should be reserved for more high priority messages than replies, thank yous and such.
Best regards,
Zapp