Get the custom L theme while you can. I bought it two days ago and it is really slick. The only issue i have noticed is that if you have your Messages and SMS/MMS separate. Whenever you have more 2 or more unread messages, they are listed under Messages (x Unread). This covers up the SMS/MMS section and makes the messages' info illegible.
This picture illustrates what i tried to explain above:
HOWEVER!! as i noted this is only an issue (and a tiny tiny one at that) if you have your email messages and SMS separate. I do NOT normally have my SMS and email messages separate. I was just poking around since i noticed it was displayed that way on the picture at gadgetbean.com. This is the best theme i have seen for the Curve. I dare anyone to top it ;)