Hello, Is there any way to have like an border-radius in windows without window decoration?

This is my desktop:
https://imgur.com/a/4H1hRoT
I would like to add border-radius so, the terminals in the screenshot could look better and have an relation with the top panel, I was thinking in search for an window decoration without any button and only adding border with radius in the corners, but I can't find any.

Thanks for reading, I wish someone could help me with this!

There are some others, but personally I use Klassy.https://imgur.com/a/0EbCnAA
Klassy: https://github.com/paulmcauley/klassy
So no, you can't have a radius without any decoration. Unless someone figured out a theme, but doubt it.