I know customizing is a ***** in 4.5, but I had Brian customize my home screen, and you really can't do Today+ without it customized, you want it to be how you like it.
I agree RIM sucks in not letting it be customizable, but I just wanted to vouch that not only will Brian customize the icons for you, for a very small donation, we're not talking about MS Office, and he is EXTREMELY helpful through the whole thing.
I think everyone here is lucky to get it without having to pay for it, somehow a decent free theme that beats Bphone got here before Bplay