One of the admins at eVeek just let me know about a new theme they have just made available called Halo Zen. Since I am not much of a Halo fan I don’t know how true to the game the theme is but it does look very nice.
The main complaint I have is that they theme is mostly shades of blue on blue with yellow thrown in here or there. Everything else is nice and detailed and I thought the top bar looked really slick.
You can pick it up OTA and through desktop manager at the links below. I think you need to register first to be able to download the themes but they are free… 
Chris Not Registered
Posted: May 1, 2008 at 12:28 PM EST
Can we get it in a today theme? Thanks
DavidB Not Registered
Posted: May 2, 2008 at 7:45 AM EST from my BlackBerry 8830
Yeah, you have to register AND be activated. A hassle from mobile….
This is a nice theme for indoor/nightime use, but with so little contrast forget it outside.
Ben Not Registered
Posted: May 2, 2008 at 9:51 AM EST
It is pretty close to the appearance of Halo. The icons used in the apps screen are actually pretty close (if not direct rips) of the ones used in Halo (2 & 3).