I have decided that I will use my banner designs throughout the level, and also because I couldn't settle on a final design nor could those whom I used for a preferences.
Instead I have gone for an entire achievement (heraldry term) aka coat of arms. Naturally I was going to have a crimson and gold mantling however when combined with the colors chosen for the shield it felt a bit too much so to balance it out I made it deep blue instead. It does feel like the colors are rather rich in certain cases however that is simply what many existing coat of arms appear as.
I'll ask for some other opinions on colors before settling on one of these, unless better color choices come to mind.