Go to the Mode section and enable the option Dark. Its tile is pinned to the Start menu by default. To enable the dark theme in Photos in Windows 10, do the following. As the Windows Insider blog explains, Adding a dark theme to File Explorer has long been a top Insider request, but it meant breaking new ground to provide a dark theme to legacy parts of the shell. It can be easily enabled without using third party tools or hacks.
There is a special option in Photos which you can use to switch the app to the dark theme. Also, the ability to trim and merge videos was added. With recent updates, the app got a brand new feature ' Story Remix' which allows applying a set of fancy 3D effects to your photos and videos. The Photos app can be used to browse, share and edit your photos and your image collection. Photos offers basic functionality to view images from the user's local drive or from the OneDrive cloud storage. The Photos app is set as the default image viewer app. Also, the app is associated with most image file formats out of the box. Photos is Windows's first-party app for image editing and viewing which replaced the Windows Photo Viewer and Photo Gallery.
