#4 Unread (new) messages and favorite messages are too similar

The colors are technically different; if you look really closely, you can see unread messages are slightly greener than favorite messages. But this difference is obviously extremely small and you definitely don't see it at a glance.

The style currently makes do by having a shadow below the final unread message, which I definitely want to keep, but it would still be good to have unread and favorite messages be more different.

In the above image, I see a clear difference between the read favourite; and the unread forum thread notification.

(EDIT: gotta test for XSS somewhere, right? test)