I am thinking a cross back top. I have some wild large polka dot red and white linen and it has been tugging at me for a while. But its runs the risk of being very Minnie Mouse like so I have not committed to a pattern yet. But I think it will be tunic length. I may go the whole route, draft a pettern and make a muslin first. And, if I feel too much like a giant mouse, I will dunk the whole thing in an indigo vat.
Or maybe I will make two and put one in a vat and leave one red for when I am feeling audacious.