We know that Microsoft edge has allowed themes to be installed from the Chrome web store, and the official has also released a theme for edge,But so far, the edge add-on store does not include a dedicated theme page. Microsoft told testers today through the edge Canary channel that the feature of installing themes in edge's own stores will come soon.
Although both are add-ons, don't confuse extensions with topics. When you install topics in a Edge, you notice that the browser prompts
Be sure to check comments and ratings before installing extensions or themes in your browser. This also applies to other browser add-on stores, because there are a lot of malicious plug-ins for browsers recently.