Yeah, Native America plains peoples tended to wear lots of color. x3 Blending in wasn't really a concern, especially not, y'know...when you're riding horses in a flat plain field and already exposed. xD In fact, they would paint their horses, decorate their manes with feathers...there was lots of intricate beadwork and stuff. xD
They were a VERY colorful people! And I think that'd be awesome if the Adelan plains people had that.
Of course, I don't think we want a plains people who is based solely off Native Americans because, well...that's been done to death. Maybe a blend of other influences, including that? :3 We can take some influence from them (I'd love the bright colors and beadwork and feathers, but I have a hardon for that xD) but could also take some Essyrni influence, if the Essyrni are connected to them. And for some reason when Tal talks about the Duhjari, I think of the mongols. xD So maybe draw some influence from there too?