I'll be taking up the role of Blue, once we get bios for Yellow and Green we can start this thing.
I realize that not every clan can use the Shiba Family crest as their banner, so here's what I'm thinking:
Each of the Shinkenger's family banners will have a Kanji written on them in place of the Shiba crest. This Kanji is a mix of their last name and element.
The Shiba crest will be a logo used when all five clans can come to a conesencous and unite together.