Change the button of deactivate connection?

Hello. When you open the browser toolbox theres a popup message that says if you want to allow the connection and there are three buttons: Accept, deactivate and Cancel. I'm trying to change the style of the deactivate button and I'm not being able to do it. I've tried with this:

    
button[dlgtype="accept"]:hover,
button[dlgtype="deactivate"]:hover,
button[dlgtype="cancel"]:hover {
 color: var(--color) !important;
 background-color: black !important;
}

  

And it looks like this:

I don't know if there's a way to disable that message so that it always enters the browser toolbox.

Thanks for any help!