I intended to get this up sooner, now it's finally ready. I mentioned some of the members of the color guard for the 30th Massachusetts, here is some (not all) of the history to go with the colors, and images of all of the flags for the unit that still survive.
http://30thmass.blogspot.com/2011/12/flags-of-30th-regiment-of-massachusetts.html

Josh Bucchioni