This a project I made that helps me keep track of time. It's a very simple countdown timer.
There is also a light theme I use whenever I use Visual Studio (for contrast).
All actions(Start, Pause, Restart, Reset, Switch Theme and Close) are done through the right-click menu so that the view isn't cluttered up.
The view changes whenver you need to reset the time
When time is up, an alarm sound plays and the app also flashes red.