How to enable my native buttons?

I have a custom theme for Windows 10, that has window buttons that look like this:
Window Buttons

However, when I go into Brave, the buttons just use the default Windows 10 buttons. Is there any way to make it so Brave will use my native buttons instead? Perhaps through a script?

I know this is possible in VSCode, where they give an option to enable native buttons.
If there isn’t an option on Brave, does anyone know where I could code it in the Brave source code?