Reply To: Shop4 Dark demo Elementor

Hello, @jeroenvdveer,

In order to achieve your desired result, please copy and paste the below given CSS code to Porto >> Theme Options >> Skin >> Custom CSS and check back to your site after clearing the browser cache.

#header .searchform select option, #header .searchform .autocomplete-suggestion, #header .searchform .autocomplete-suggestions, #header .searchform .selectric-items {
    color: #fff !important;
    background-color: #000 !important;
}
.live-search-list .autocomplete-suggestion .search-price {
    color: #fff !important;
}

Please refer to this screenshot: https://postimg.cc/V5TkL0bD

Best Regards,
PThemes Team.