Followed all procedures on the web store , themes seem installed, but then the Brave themes come up and I see no way to access the themes installed!
Hey @lochinvar ! Welcome to the community 
Unfortunately, there is no way to have more than one theme installed on your Brave browser. This is due to how Chromium works which is what Brave is based on.
Hope this helped!
Porridge
Thanks, what a pity! :