Hello,
Try to use the next custom CSS code:
.select2.select2-container--default .select2-selection--single, select,
.widget-title, .s_widgets-open-close .sidebar .sidebar-widget:not(.sidebar-slider)>.widget-title>span:after,
.etheme-product-status-filter a:before, .etheme_widget_brands_filter li a:before, .wc-layered-nav-rating a:before, .wc-layered-nav-term a:before {
border-color: #555;
}
.sidebar-widget ul li a, .widget_product_categories.sidebar-widget ul li a {
color: #555;
}
.sidebar-widget li.et_widget-show-more {
color: red;
}
Regards