I've been very ntrigued by this thread, as I have a SAGA Norman force composed of Perry Crusade figures, with some Crusader Miniatures characters and "swords for hire" Flemish spearmen (as Perry don't make any figures in akheton). I am - and have been for a few years now - in the process of painting them, and as a spiritual Geordie (now there's two words you seldom see next to each other!!!) I am going for a black and white theme for their shields and what passes for livery in the 11th Century, with the mercenaries being sponsored by Flemish & Newcastle Breweries and sporting the "Newcy Broon" blue star.
Very impressed by what you've done to the shields. Somebody (you?) put up a very good tutorial on the Workbench about "weathering" shields, which I intend to use, although I was thinking of using a tool to gouge out some sword/axe cuts, to make them look a bit more 3D.