As I was wide awake at 6 this morning, I was thinking about this quilt...actually, I woke up several times during the night and also dreamed about this quilt. This is the idea I came up with. This picture just has one of the purples as the middle stripe. It slightly contrasts with the center block.
The purple on the bottom is the same color as the center block and also matches the purple stripe in the border fabric. It can go either way... I like them both!