userContent.css

/*
I need to comment, but not right now.

    Open Firefox and press Alt to show the top menu, then click on Help → Troubleshooting Information
    Click the Show Folder button beside the Profile Folder entry
    Create a folder named chrome in the directory that opens
    In the chrome folder paste the .css file with the name userContent.css
*/

/* The new tab of firefox */
@-moz-document url(about:newtab) {
    .activity-stream {
        background-color: #333333 !important;
    }
    .top-sites-list .top-site-outer > a {
        color: #dddddd !important;
    }
    /*
    .tile {
      filter: grayscale(0%) !important;
      opacity: .9 !important;
    }
    */
    .top-site-inner {
        color: #ddd;
    }
    @media (min-width: 1280px) {
      .activity-stream main {
        width: : 989px !important;
      }
    }
}

/* Google page and search page */
@-moz-document domain(google.com.br), domain(google.com) {
    body a {
        color: #5c99d6 !important;
    }

    body a:visited {
        color: #a679d2 !important;     
    }

    .g-blk, .knowledge-panel, .vk_arc, .mod table, .mod table span, .mod, .vk_c, .rllh__header-container div, .mnr-c, g-scrolling-carousel, #am-b1, .ab_button, .action-menu.ab_ctl {
        background: #2b2b2b !important;
    }

    .vk_c .rllt__link:hover, .mod a div:hover {
        background-color: #333333 !important;
    }

    ul[role=listbox] li[role=presentation]:hover {
        background-color: #2b2b2b !important;  
    }
    /*
    .g {AEprdc vk_c kp-blk knowledge-panel Wnoohf OJXvsb
        background: #2b2b2b !important;  
    }, .mod .dw-siw  border: 1px solid #333 !important;
    */

    #gsr, #topabar, g-inner-card, .mod .dw-sb-cont {
        background: #333333 !important;
    } 

    .gstl_0.sbib_a, #lst-ib, #sfibbbc, #sfdiv, .mod input, ul[role=listbox] {
        background: #333333 !important; 
        color: #ddd !important;
    }
    
    .mod input, .mod .dw-sb-btn {
        background: #333333 !important;
        border-color: #333 !important;
    }

    #hdtbSum, .sfbgg, #fbar, .mod, .related-question-pair {
        background: #2b2b2b !important;    
    }  

    .related-question-pair, .mod span, .mod, .e2BEnf h3, .st, div[role=heading], .mnr-c div {
        color: #ddd !important;
    }

    #hdtb-msb {
        color: #fff;
    }

    .r a, .s a, .card-section a, .match-mod-horizontal-padding a, ul[role=listbox] li[role=presentation] a, g-more-link a span {
        color: #5c99d6 !important;
    }

    .r a:visited, .s a:visited, .card-section a:visited, .match-mod-horizontal-padding a:visited, ul[role=listbox] li[role=presentation] .sbpqs_a, g-more-link a span:visited {
        color: #a679d2 !important;    
    }

    .st em {
        color: #fff !important;     
    }

    cite {
        color: #09a53c !important;
    }
}