.product-option-selector-box [value="Rose Pink"] {
    background-size: 43px !important;
    height: 33px;
    width: 32px;
}
@media(max-width: 767px){
  .product-option-selector-box [value="Rose Pink"] {
    background-size: 45px !important;
    height: 34px;
    width: 34px;
    border-radius: 10px;
}
}