Oh this sounds like even more fun than the last one! (Which I got carried away on doing as a scrappy - every block different except for the sashing strips - and ended up with a lap quilt).
I've done a braid before but that one I used a series of contrasting colors which gave a completely different look. May do this in some of the same fabrics as I used on my green around the world that shades from dark to light and back. It is 19 different fabrics! Some of them "shouldn't have worked" but did.