Hi, try adding this custom css:
.recent-post figure, span.highlighted, span.dropcap4, .loved-item:hover .loved-count, .flickr-widget li, .portfolio-grid li, input[type="submit"], .wpcf7 input.wpcf7-submit[type="submit"], .gform_wrapper input[type="submit"], .mymail-form input[type="submit"], .woocommerce-page nav.woocommerce-pagination ul li span.current, .woocommerce nav.woocommerce-pagination ul li span.current, figcaption .product-added, .woocommerce .wc-new-badge, .yith-wcwl-wishlistexistsbrowse a, .yith-wcwl-wishlistaddedbrowse a, .woocommerce .widget_layered_nav ul li.chosen > *, .woocommerce .widget_layered_nav_filters ul li a, .sticky-post-icon, .fw-video-close:hover {
background-image: url(http://your-image.jpg)!important;
background-color: none!important;
}
If it doesn’t work, can you show us your website live?