The Game bar is a Xbox app Game DVR feature that lets you record and share game clips and screenshots in Windows 10. However, you can also use the Game bar to broadcast, record, and take screenshots of any app and game in Windows 10.
Starting with Windows 10 build 17093, Microsoft gave the Game bar a makeover so it’s even easier to find what you’re looking for. You can now also choose a Light, Dark, or your current Windows app mode theme for the Game bar.
This tutorial will show you how to change the Game bar to use a light or dark theme for your account in Windows 10.