So this just came out. Apparently the pic now on the Google Galaxy Nexus Tech Specs page shows a varied darker LTE version of the phone (flip the phone around in the 3d spin view).
Article:
Thickness Comparison: LTE vs. GSM Galaxy Nexus – Droid Life: A Droid Community Blog
Google Page for GN:
Galaxy Nexus
Doesn't look that different but definitely a darker, more graphite color. Probably impossible to tell what it will look like IRL by looking at this tho... I pray it won't be bad. They also talk about the thickness difference but looks practically the same to me. I notice that this virtual model doesn't have the small power icon next to the side power button.
Also, someone in the comments posted a slightly better compaison using the virtual tool, because for some reason the article's side pc looks almost black and white (look at the LTE version's dock contacts...they are gray instead of gold..??):
http://i43.tinypic.com/ix5yr5.png