DailyUI #014 - Timer

Daily UI - #014 Briefing:
Design a Countdown Timer. Is it for an app? An interface for an oven? A sport-related countdown? A launch countdown for NASA?

My Concept:
A beautiful and focused timer application. With just start-stop and reset buttons, as well as a time input, my concept pushes minimalism to its limits. As the timer runs closer to zero the colour gradually progresses from green to orange and finally red.

Full versions are attached. Any thoughts? ⏱