I see the flash you speak of in Chrome. I doubt it is related to ColdBox in any way. Your CSS files appear to load early in the page, so it’s probably no belated styles. I would start by removing JS files to see if there’s some stuff running on document.ready() that is affecting the page. Also, you have a 404 on the http://www.beta.localvoter.org/static/js/maps/maps-user-location.js URL.
Thanks!
~Brad
ColdBox Platform Evangelist
Ortus Solutions, Corp
E-mail: brad@coldbox.org
ColdBox Platform: http://www.coldbox.org
Blog: http://www.codersrevolution.com