.js-product .t-product__option-variants_buttons .t-product__option-checkmark_image {
  background-color: rgb(20, 21, 21);
  border-color: transparent !important;
}
.js-product .t-product__option-variants_buttons .t-product__option-input:checked + .t-product__option-checkmark_image::before {
  border-color: rgb(238, 238, 238) !important;
}