Microsoft made a small change to the Browser Edge based on Chromium. Starting today, you can install any of the various Chrome themes on Microsoft Edge. 
Edge's Canary channel now has native support for Chrome themes and no additional installation steps are required.
The history:
Microsoft Edge Canary in version 81.0.394.0 first brought the ability to use Chrome themes, but required amendment one shortcut. Starting with Edge Canary in version 82.0.444.0, a flag was added that enabled support for Chrome themes in the Microsoft browser.
Well the flag is no longer required. All you have to do is visit the Chrome Web Store and choose a theme that you like.
To install a Chrome theme in Microsoft Edge, open the Themes section in the Google Chrome Store. Select a theme and click the Add button to install it.
That's it.
Current versions of Edge
- Stable Channel: 84.0.522.52
- Beta Channel: 85.0.564.23
- Dev Channel: 86.0.587.0
- Canary Channel: 86.0.597.0
