How i can impement button Dark/Ligth theme in my Blazor WebAssembly App

Hi evryone,

I have new project with blazor WebAssembly Framework.Net. Im use UI Radzen, but i d'ont now how i can implement a button to change theme only betwin Dark an Ligth.

I have seen the repository:
https://github.com/radzenhq/radzen-blazor

Thanks