Currently there are 3 application themes: Default, Material, and Bootstrap.
These are nice and helpful however having 3 is quite a bit limiting.
I totally understand that a lot of people will and maybe should create a theme based on their own styles and preferences.
However I honestly think most people probably use a default theme and make small corrections to it in order to suit their needs.
Admin edit: We will be keeping here a list of the suggestions, add your comment which one you would like to see implemented - if it's not on this list, we will add it:
In WPF there are 20 or so styles.
Why only 3 in Blazor when the web is just as easy to style as WPF?