I voted blue, but I have to admit that I'm somewhat torn. I think that the blue looks better, but I have a particular fondness for yellow because my only remaining Falcon shield (until the Legends came out, that is) was a yellow bordered one. So, I like the blue for aesthetic reasons and the yellow for the sake of nostagia.
"Always do what you want, and say what you feel, because those who mind don't matter, and those who matter don't mind." ~ Doctor Suess
According to my storyline, the Black Falcons started and lost a bloody rebellion against the Emperor 200 years ago, and their descendents are even now second-class citizens (I don't hate the Black Falcons, it's just my interpretation of the LEGO sets and catalog scenes, with a little creative liberties here and there). The only way they can gain citizenship is by serving in the army, and the soldiers with blue shields have attained that priviledge. I managed to incorporate every faction into my storyline, and someday when I have a lot of time on my hands, I'll post it in the Stories section.
Blue. They're the only ones I have, although I don't think the yellow looks bad.
I loathe the use of the green and white flags as well as the red front on the Knight's Castle. Diversity for the sake of diversity doesn't always look good.
"A chair like this is like a girlfriend! Why would you trade in an old one that's comfortable for a new one that could be a pain in the butt?" -Archie Bunker-
I voted yellow because I like more yellow than blue.
[url=http://www.brickshelf.com/gallery/7sword7/]Shelved bricks(???)[/url]
You know you're a good person when you see megablocks and have to do things you would rather not.