At first I thought brown then after hearing about the problems with vinyl I changed my mind to white but I wouldn't attach the downspout over the trim but right next to it, similar to this picture:



Picture came from here: http://www.lewisseamlessgutter.com/commercial.html and on that page, below the laundromat, there is another mansard roof. "Instead of installing wooden fascia boards, we bent out .032 gauge aluminum and made an aluminum fascia to back the gutter."

[Linked Image from i108.photobucket.com]