"Give it a second," Leo grinned. He swiped his thumb across his smartwatch.

He met Sarah at the gallery opening. She looked down at his feet and laughed. "Indigo? For a minimalist art show? Bold."

He tapped a design titled 'Electric Midnight.' Instantly, the white panels on his shoes shimmered and dissolved. A deep indigo liquid motion began to swirl across the fabric of the sneakers, punctuated by rhythmic pulses of neon violet. He stood up, and as he walked toward the door, the motion sensors in the soles detected his pace; the faster he moved, the more the violet pulses raced around his ankles.

Leo sat on his bed, the pristine white sneakers resting on his lap. To the uninitiated, they looked like high-end, minimalist kicks. But Leo knew the secret lay in the flexible e-paper displays wrapped around the sides and heels. He pulled out his phone and opened the ShiftWear app.

"Alright," he muttered, scrolling through the marketplace. "Let's see what the world is wearing today."