So... I found this blue denim twill that defies natural laws of pigmentation. They're even brighter than The Shoes. I used the same fabric from the tank to make a raglan T, with a light blue pocket instead of yellow. I don't know about using bright blue as a 'neutral', but it seems to work for her.
She picked the bold metal button. I'm the most pleased with my interesting welt pocket. It turned out quite nice.
She makes autumn lively! For more nice versions, check out Project Run and Play