SweetTokyoNight/gtk-3.0/apps/_nemo.scss

.nemo-window {
    .places-treeview {
        -NemoPlacesTreeView-disk-full-bg-color: lighten($_sidebar_color, 15%);
        -NemoPlacesTreeView-disk-full-fg-color: $teal;
        -GtkTreeView-vertical-separator: 7; 
        .view.cell,
        iconview.cell {
            &:hover {
                background: transparentize(darken($_sidebar_color, 3%), 0.3);
            }
            &:selected {
                background: $selected_bg_color;
                color: $selected_fg_color;
            }
        }
    }

    .sidebar {
        background-color: $_sidebar_color; 
        .view, .iconview, row {
            color: #98abb2;
            background-color: transparent;
        }
    }

    .nemo-window-pane {
        widget.entry {
            background-clip: padding-box;
            min-height: 28px;
            padding: 5px;
            color: $fg_color;
            border: 1px solid $borders_color;
            border-radius: 3px;
            box-shadow: inset 0 1px transparentize(black, 0.1),
                        inset 1px 0 transparentize(black, 0.04),
                        inset -1px 0 transparentize(black, 0.04),
                        inset 0 -1px transparentize(black, 0.02),
                        0 1px transparentize(white, 0.4);
            &:selected {
                background-color: $selected_bg_color;
                color: $selected_fg_color;
            }
        }
    }

    toolbar.primary-toolbar {
        margin-bottom: -1px;
        background: $headerbar_color;
        button {
            @include button(normal-header);
            margin-top: 5px;
            margin-bottom: 5px;
            min-height: 24px;
            &:hover { 
                background: transparent;
                color: $selected_bg_color; 
            }
            &:selected,
            &:active,
            &:checked { @include button(active-header); }
        }
    }

    .nemo-inactive-pane .view,
    .nemo-inactive-pane iconview {
        background-color: darken($base_color, 2%); 
    }
    
}