check out page color chnage

.select2-container .select2-selection--single {
    height: 38px;
}
.select2-container--default .select2-selection--single .select2-selection__rendered {
    line-height: 38px;
}
.select2-container--default .select2-results__option--highlighted[aria-selected],
.select2-container--default .select2-results__option--highlighted[data-selected] {
    background-color: #3B972B;
}