SpinB

/***********************************************************************************************************************
                                                                                            THE VERGE BY SpinBox
************************************************************************************************************************/
@-moz-document domain(theverge.com) {

    body,
    html {
        background-color: #151515 !important;
        color: #888888 !important;
    }

SpinB

/*
You can add this block to your userChrome.css or you can 
save the file and import it to your userChrome.css
@import "css/userChrome-files/hide_buttons.css";
Just change the path to the file.
*/

/************************************************
Hide min max and close Buttons in Private Mode
************************************************/