.select2-container--default .select2-results__option--highlighted[aria-selected] {
    background-color: rgba(139, 92, 246, 0.1) !important;
    color: #143157 !important;
}

.select2-container--default .select2-results__option[aria-selected=true] {
    background-color: rgba(139, 92, 246, 0.2) !important; 
    color: #143157 !important;
}
