James Madison University:
http://www.gammaphibeta.org/JMU
University of Michigan:
http://www.gammaphibeta.org/umichcolony/
Those two pages above have links to the facebook, twitter, and instagram accounts for each colony.
Columbia University is colonizing in Spring 2015, and doesn't have a website yet. But it does have facebook (
https://www.facebook.com/GammaPhiBetaColumbia) and twitter (
https://twitter.com/GPhiBColumbia) and instagram (
http://instagram.com/gammaphibetacolumbia)